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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks so much for your help. I’ll
try the workaround you suggested.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Shane<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> mapguide-users-bounces@lists.osgeo.org
[mailto:mapguide-users-bounces@lists.osgeo.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Walt Welton-Lair<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, January 18, 2007
10:54 AM<br>
<b><span style='font-weight:bold'>To:</span></b> mapguide-users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>Shane,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>I've determined that
there are two problems preventing this from working correctly.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>1) There's a MapGuide
server bug in which the information needed to remove the layer from the DWF
Viewer is not encoded properly.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>2) There's a refresh bug
in DWF Viewer - when a layer is removed the graphics associated with that
layer are not getting removed.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>The first problem will
cause the layer/legend control to not update correctly. But if you're
hiding that control then it doesn't matter all that much.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>The second problem is
what's causing your refresh issues. There is a workaround for this: you
need to force a full refresh of the DWF Viewer. This tells the viewer to
throw away all graphical data and re-request it. You're
actually seeing this happen when you zoom out (after 4-5 zooms, as you
wrote). And note that despite the first bug you'll get back the correct
graphics because the layers have been removed on the server, just not in the
client.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>To force the full refresh
you'll need to modify your script code:</span></font><o:p></o:p></p>
<blockquote style='margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>Dim javaScript As String
= "parent.parent.mapFrame.emapViewer.Document.ForceRefresh = true;
parent.parent.mapFrame.Refresh();"</span></font><o:p></o:p></p>
</blockquote>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>You might have to edit
this. Basically you need to get to the instance of the DWF Viewer control
(in MapGuide this is stored in the emapViewer variable - see
dwfmappane.templ), set its Document.ForceRefresh property to true, and
then call Refresh.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>I'll be submitting a fix
for the first bug shortly. The DWF Viewer bug will get addressed in a
future release of the viewer.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>Of course your other
option is to use <st1:City w:st="on"><st1:place w:st="on">AJAX</st1:place></st1:City>
viewer...</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>Hope this helps.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'>Walt</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:.5in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Buscher,
Shane [mailto:Shane.Buscher@nngco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, January 18, 2007
3:29 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Walt Welton-Lair; Trevor Wekel<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Walt,<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>We’re using DWF
Viewer 6.5. Unfortunately I’m not adding the layers to the legend
at runtime, or even displaying the legend so I’m not sure if it updates
correctly. I’ll try to test this out though and get back to you.<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>-shane<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
<p class=MsoNormal style='margin-left:1.0in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Walt
Welton-Lair [mailto:walt.welton-lair@autodesk.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, January 18, 2007
7:25 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Buscher, Shane; Trevor Wekel<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:1.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>I've
made progress on this - I think it actually involves a couple of bugs.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Two questions:</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>1/ does
the DWF Viewer's layer/legend control correctly update when you remove the
layers?</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>2/ What
version of DWF Viewer are you using (6.5 or 7.0)?</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Thanks,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Walt</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:1.0in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Buscher,
Shane [mailto:Shane.Buscher@nngco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, January 16, 2007
8:53 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Trevor Wekel; Walt Welton-Lair<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Thanks
for looking into this!<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
<p class=MsoNormal style='margin-left:1.5in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Trevor
Wekel [mailto:trevor.wekel@autodesk.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, January 16, 2007
11:24 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Buscher, Shane; Walt
Welton-Lair; mapguide-users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:1.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Ok.
Looks like this is a bug in trunk and may be a bug in 1.0.2. We are
investigating and will keep you posted. </span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Thanks
Shane,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Trevor</span></font> <o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:1.5in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Buscher,
Shane [mailto:Shane.Buscher@nngco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, January 16, 2007
6:48 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Trevor Wekel; Walt
Welton-Lair; mapguide-users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:1.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>I’m
running 1.02.<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>-shane<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:1.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
<p class=MsoNormal style='margin-left:2.0in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Trevor
Wekel [mailto:trevor.wekel@autodesk.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, January 15, 2007
5:58 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Buscher, Shane; Walt
Welton-Lair; mapguide-users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:2.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Hi
Shane,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Walt and
I are digging through some code. What version of MapGuide are you on?</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Thanks,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Trevor</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:2.0in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Buscher,
Shane [mailto:Shane.Buscher@nngco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, January 15, 2007
2:51 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Walt Welton-Lair;
mapguide-users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Walt,<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>My code works
fine with the <st1:place w:st="on"><st1:City w:st="on">AJAX</st1:City></st1:place>
viewer, so the refresh problem is related exclusively to the DWF viewer. <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Here’s
the results I’m seeing in the DWF viewer after trying to remove layers at
runtime: <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><b><u><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'>Action </span></font></u></b><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>
<b><u><span
style='font-weight:bold'>Result</span></u></b><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Javascript
Refresh()
Does
not remove layers<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Exec
built in Refresh command
Does
not remove layers<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Pan
multiple times
Does
not remove layers<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Zoom In
multiple times
Does
not remove layers<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Zoom Out
multiple times
Layers
are removed<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Remove
layers when not in their map extent Layers are removed<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Specifically,
when zooming out about 4-5 times the layers are consistently removed.
Hope this helps. <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>-shane<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.0in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='margin-left:2.5in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
mapguide-users-bounces@lists.osgeo.org
[mailto:mapguide-users-bounces@lists.osgeo.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Walt Welton-Lair<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, January 15, 2007
3:22 PM<br>
<b><span style='font-weight:bold'>To:</span></b> mapguide-users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>There's
a server-side bug in the current MapGuide code where the DWF Viewer isn't
properly refreshed after a pan. I don't know if that bug made it into an
actual released build though. If it did then that could be related to the
refresh problem you're seeing. Try interacting with your map by simply
panning a little and let us know if the view updates correctly. The
AJAX Viewer doesn't have this problem.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Walt</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:2.5in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Buscher,
Shane [mailto:Shane.Buscher@nngco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, January 15, 2007
10:12 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Walt Welton-Lair;
Mapguide_users@lists.osgeo.org; Trevor Wekel<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Walt/Trevor,<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>I’m
definitely refreshing by calling the Refresh method in the viewer api. My
exact code is below. I know the refresh gets executed successfully
because I see a quick status bar in the top left corner of the viewer
flash. If I comment out the javascript call, no status bar flashes.
Furthermore, the built-in RefreshMap command that you can add as a button in
Studio doesn’t work either after running the code snippet
below. <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>I also
know, according to the users guide p. 56, that you don’t have to refresh
the map from the client after adding layers because the LayerCollection takes
care of this for you. I’ve tested this when adding layers, and this
is true. I am somewhat assuming that removing a layer would be the
same. I wonder if there is a problem with the DWF viewer. I suppose
I can try the <st1:place w:st="on"><st1:City w:st="on">AJAX</st1:City></st1:place>
viewer… It might be really helpful if somebody could duplicate the
issue. <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Shane<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>Protected</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font color=blue><span
style='color:blue'>Sub</span></font> Button2_Click(<font color=blue><span
style='color:blue'>ByVal</span></font> sender <font color=blue><span
style='color:blue'>As</span></font> <font color=blue><span style='color:blue'>Object</span></font>,
<font color=blue><span style='color:blue'>ByVal</span></font> e <font
color=blue><span style='color:blue'>As</span></font> System.EventArgs) <font
color=blue><span style='color:blue'>Handles</span></font> Button1.Click<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=green><span style='color:green'>'Remove layers </span></font><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> lyr0 <font
color=blue><span style='color:blue'>As</span></font> MgLayer =
map.GetLayers.GetItem(0)<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> lyr1 <font
color=blue><span style='color:blue'>As</span></font> MgLayer =
map.GetLayers.GetItem(1)<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.GetLayers.Remove(lyr0)<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.GetLayers.Remove(lyr1)<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.Save(resourceService)<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=green><span style='color:green'>'emit javascript to refresh map<o:p></o:p></span></font></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> scriptKey <font
color=blue><span style='color:blue'>As</span></font> <font color=blue><span
style='color:blue'>String</span></font> = <font color=maroon><span
style='color:maroon'>"Refresh"<o:p></o:p></span></font></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>If</span></font> <font color=blue><span
style='color:blue'>Not</span></font>
Page.ClientScript.IsStartupScriptRegistered(<font color=blue><span
style='color:blue'>Me</span></font>.GetType, scriptKey) <font color=blue><span
style='color:blue'>Then<o:p></o:p></span></font></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> javaScript <font
color=blue><span style='color:blue'>As</span></font> <font color=blue><span
style='color:blue'>String</span></font> = <font color=maroon><span
style='color:maroon'>"parent.parent.mapFrame.Refresh();"<o:p></o:p></span></font></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
Page.ClientScript.RegisterStartupScript(<font color=blue><span
style='color:blue'>Me</span></font>.GetType, scriptKey, javaScript, <font
color=blue><span style='color:blue'>True</span></font>)<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>End</span></font> <font color=blue><span
style='color:blue'>If<o:p></o:p></span></font></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font
color=blue><span style='color:blue'>End</span></font> <font color=blue><span
style='color:blue'>Sub</span></font></span></font><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='margin-left:.5in;text-align:center'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='margin-left:3.0in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
mapguide-users-bounces@lists.osgeo.org
[mailto:mapguide-users-bounces@lists.osgeo.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Walt Welton-Lair<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, January 15, 2007
1:52 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:3.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='margin-left:3.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Yeah a missing refresh would make sense. Isn't
it the client's responsibility though to request the refresh?<o:p></o:p></span></font></p>
</div>
<blockquote style='margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:2.5in'><font size=2 face="Times New Roman"><span
style='font-size:10.0pt'>-----Original Message----- <br>
<b><span style='font-weight:bold'>From:</span></b>
mapguide-users-bounces@lists.osgeo.org on behalf of Trevor Wekel <br>
<b><span style='font-weight:bold'>Sent:</span></b> Mon 1/15/2007 7:12 PM <br>
<b><span style='font-weight:bold'>To:</span></b> Buscher, Shane;
Mapguide_users@lists.osgeo.org <br>
<b><span style='font-weight:bold'>Cc:</span></b> <br>
<b><span style='font-weight:bold'>Subject:</span></b> [mapguide-users] RE:
[Mapguide_users] FW: Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Hi Shane,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Hmm... I
wonder if the viewer is not bothering to request the map overlay image
again? That would explain the behaviour you are seeing.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Are you
using a Windows box as a client? Are you familiar with Fiddler?</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Fiddler
is an HTTP proxy that captures HTTP requests and responses. If you
install and use it, you should be able to see all the traffic between the
client and Web Extensions / MapAgent. There should be a
GETDYNAMICMAPOVERLAY request generated by the client. This request should
refresh the map and show the added/removed layers.</span></font><o:p></o:p></p>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Also,
are you using Base Map layers (ie. tiled images)? Base Map layers should
not be changed on the fly. They should be considered static. This
is probably not an issue since you are adding dynamic layers but I just figured
I would check.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Thanks,</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Trevor</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:2.5in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Buscher,
Shane [mailto:Shane.Buscher@nngco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, January 15, 2007
11:04 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Trevor Wekel;
Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Mapguide_users] FW:
Remove layers at runtime</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Trevor,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>I think
I found a big hint after testing what you suggested. When the layers
I’m trying to remove are within the map view extent, they do not
‘disappear’ upon removing them. However, If the layers are
completely outside the map view extent they indeed get removed with the same
code. It doesn’t matter if it’s one layer or multiples.
Hopefully this gives you something to work with. </span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Regards,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Shane</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<div>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='margin-left:2.5in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Trevor
Wekel [mailto:trevor.wekel@autodesk.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, January 15, 2007
11:18 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Buscher, Shane;
Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Mapguide_users] FW:
Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Hi
Shane,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>My
bad. I've been working with the Mapguide 1.1.x and trunk branches.
You are working on the released 1.0.x branch. Sorry for the confusion.
1.0.x does not have the boolean return.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Is there
any difference if you try to remove only one layer so there are still
layers on the map?</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Thanks,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Trevor</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:2.5in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Buscher,
Shane [mailto:Shane.Buscher@nngco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Saturday, January 13, 2007
1:31 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Trevor Wekel;
Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Mapguide_users] FW:
Remove layers at runtime</span></font><o:p></o:p></p>
<div id=idOWAReplyText61961>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Trevor,</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>MgLayerCollection.Remove doesn't
return a boolean according to the api documentation, and also doesn't indicate
it in the intellisense. </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Regards,</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Shane</span></font><o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:2.5in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Trevor
Wekel [mailto:trevor.wekel@autodesk.com]<br>
<b><span style='font-weight:bold'>Sent:</span></b> Fri 1/12/2007 5:18 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Buscher, Shane;
Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Mapguide_users] FW:
Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Hi
Shane,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Remove()
should returns a boolean true or false. false indicates that the layer
was not removed. Can you see if the remove was successful? (just trying
to debug a bit)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Thanks,<br>
Trevor</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:2.5in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Buscher,
Shane [mailto:Shane.Buscher@nngco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, January 12, 2007
4:13 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Trevor Wekel;
Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Mapguide_users] FW:
Remove layers at runtime</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Trevor,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Thanks
for the response. I think I’m doing everything you suggested
correctly, but have provided the snippets below. When the page loads the
ConnectToMapGuide() method gets called, which opens up the MgMap and sets it to
a module level variable (map). Then, Button1 is clicked which
successfully adds two layers to the map. When Button2 gets invoked, I try
to remove the layers but the layers still persist in the map. </span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>I’m
not sure where to go from here. Do you need to copy the layers in
session, then add them from there in order to have the ability to remove
them? Just reaching…</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Regards,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Shane</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=green
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:green'>‘class vars</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>Private</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> resourceService <font
color=blue><span style='color:blue'>As</span></font> MgResourceService</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>Private</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> map <font color=blue><span
style='color:blue'>As</span></font> MgMap</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>Private</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font color=blue><span
style='color:blue'>Sub</span></font> ConnectToMapGuide()</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=green><span style='color:green'>'Connect to MapGuide site</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> userInfo <font
color=blue><span style='color:blue'>As</span></font> <font color=blue><span
style='color:blue'>New</span></font> MgUserInformation(Session.Item(<font
color=maroon><span style='color:maroon'>"mgSessionId"</span></font>))</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> siteConn <font
color=blue><span style='color:blue'>As</span></font> <font color=blue><span
style='color:blue'>New</span></font> MgSiteConnection</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
siteConn.Open(userInfo)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=green><span style='color:green'>'set resource service</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
resourceService = siteConn.CreateService(MgServiceType.ResourceService)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=green><span style='color:green'>'Open map</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map = <font color=blue><span style='color:blue'>New</span></font> MgMap</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.Open(resourceService, Session.Item(<font color=maroon><span
style='color:maroon'>"mgMapName"</span></font>))</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>End</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font color=blue><span
style='color:blue'>Sub</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>Protected</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font color=blue><span
style='color:blue'>Sub</span></font> Button1_Click(<font color=blue><span
style='color:blue'>ByVal</span></font> sender <font color=blue><span
style='color:blue'>As</span></font> <font color=blue><span style='color:blue'>Object</span></font>,
<font color=blue><span style='color:blue'>ByVal</span></font> e <font
color=blue><span style='color:blue'>As</span></font> System.EventArgs) <font
color=blue><span style='color:blue'>Handles</span></font> Button1.Click</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=green><span style='color:green'>‘add dwf layer</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in;text-indent:.5in'><font size=2
color=blue face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'> Dim</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> schematicId <font
color=blue><span style='color:blue'>As</span></font> <font color=blue><span
style='color:blue'>New</span></font>MgResourceIdentifier _
</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:3.0in;text-indent:.5in'><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>(<font
color=maroon><span style='color:maroon'>"Library://VST/Layers/SouthOmahaTeamSchematic.LayerDefinition"</span></font>)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> schematic <font
color=blue><span style='color:blue'>As</span></font> MgLayer =
CreateLayer(schematicId, <font color=blue><span style='color:blue'>False</span></font>)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.GetLayers.Insert(index, schematic)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=green><span style='color:green'>‘add sdf layer</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:3.0in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'> Dim</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> valveId <font color=blue><span
style='color:blue'>As</span></font> <font color=blue><span style='color:blue'>New</span></font>
MgResourceIdentifier _ </span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:3.0in;text-indent:.5in'><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>(<font
color=maroon><span style='color:maroon'>"Library://VST/Layers/SouthOmahaValves.LayerDefinition"</span></font>)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> valves <font
color=blue><span style='color:blue'>As</span></font> MgLayer =
CreateLayer(valveId, <font color=blue><span style='color:blue'>True</span></font>)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.GetLayers.Insert(index, valves)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.Save(resourceService)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=green><span style='color:green'>'emit javascript to refresh map</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>End</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font color=blue><span
style='color:blue'>Sub</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>Protected</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font color=blue><span
style='color:blue'>Sub</span></font> Button2_Click(<font color=blue><span
style='color:blue'>ByVal</span></font> sender <font color=blue><span
style='color:blue'>As</span></font> <font color=blue><span style='color:blue'>Object</span></font>,
<font color=blue><span style='color:blue'>ByVal</span></font> e <font
color=blue><span style='color:blue'>As</span></font> System.EventArgs) <font
color=blue><span style='color:blue'>Handles</span></font> Button2.Click</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> lyr0 <font
color=blue><span style='color:blue'>As</span></font> MgLayer =
map.GetLayers.GetItem(0)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=blue><span style='color:blue'>Dim</span></font> lyr1 <font
color=blue><span style='color:blue'>As</span></font> MgLayer =
map.GetLayers.GetItem(1)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.GetLayers.Remove(lyr0)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.GetLayers.Remove(lyr1)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
map.Save(resourceService)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
<font color=green><span style='color:green'>'emit javascript to refresh map</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>End</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> <font color=blue><span
style='color:blue'>Sub</span></font></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<div>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='margin-left:2.5in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Trevor
Wekel [mailto:trevor.wekel@autodesk.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, January 12, 2007
3:37 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Buscher, Shane;
Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Mapguide_users] FW:
Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Hi
Shane,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>This
should work. During your setup, are you calling MgMap.Open() or
MgMap.Create()? The MgMap.Open() should set up the resource identifier
correctly so that Save() will have the map to the correct session repository.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Is the
session id being propagated correctly? If you can do the following and
the layer appears in the viewer then the session should be ok.</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>MgMap.Open()</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>MgMap.GetLayers().Insert(layer)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>MgMap.Save()</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>If the
Insert() works and Remove() doesn't</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>MgMap.Open()</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>MgMap.GetLayers().Remove(layer)</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>MgMap.Save()</span></font><o:p></o:p></p>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Then
this is probably a bug. Also, does the behaviour depend on the number
remaining layers?</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Thanks,</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=blue
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:blue'>Trevor</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:2.5in'><b><font size=2 face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Buscher,
Shane [mailto:Shane.Buscher@nngco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, January 12, 2007
7:16 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Buscher, Shane;
Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Mapguide_users] FW:
Remove layers at runtime</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>I
haven’t got any feedback yet, but I have been trying desperately to make
this work. To recap, I’m finding that adding a layer to a map at
runtime with MgLayerCollection.Add works fine. However, when I try to
remove layer(s) with MgLayerCollection.Clear, MgLayerCollection.Remove, or
MgLayerCollection.RemoveAt the layer(s) are indeed removed from the collection-
but <i><span style='font-style:italic'>not the map</span></i>. I am
saving the map and refreshing the map after removal. </span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>So why
does inserting a layer into the MgMapCollection work, but removing not?
Looking at the developers guide on page 56 there is a note for getting a layer
collection from the map (MgMap.GetLayers): </span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><i><font size=1 face=StoneSans><span
style='font-size:9.0pt;font-family:StoneSans;font-style:italic'>In the MapGuide
API, getting a collection returns a reference to the collection. So adding the
layer to the layer collection immediately updates the map.</span></font></i><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>I am get
the impression that adding a layer to the collection automatically updates the
map, this doesn’t apply for removing a layer. I can’t figure
out what I need to do to mimic what the api does for you when inserting a layer
when trying to remove a layer. Or is this a bug?</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Thanks
for any help in advance. </span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Regards,</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:2.5in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Shane</span></font><o:p></o:p></p>
<div>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
<p class=MsoNormal style='margin-left:2.5in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
mapguide_users-bounces@lists.osgeo.org
[mailto:mapguide_users-bounces@lists.osgeo.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Buscher, Shane<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, January 09, 2007
4:49 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Mapguide_users@lists.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Mapguide_users] FW:
Remove layers at runtime</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-left:2.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p style='margin-left:2.5in'><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>I’ve run into issues with removing all layers
from the map at runtime. See the code snippet below. All the layers
get removed from the layerCollection, but the layers still display.
I’ve successfully used the same code to insert layers, except I execute
the</span></font> <font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>layerCollection.Insert(index, layer) method. I
don’t know why the same code wouldn’t work for clearing
layers. </span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>I have multiple layers
stored in a library repository that users need to add and remove at
runtime. Do I need to copy each layer in indvidual session repositories
to add and reomove them? If I don’t, will one user adding/removing
layers affect other user sessions? I know this is the case when you edit
data, but these layers are view only. </span></font> <o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>‘</span></font><font size=2 color=green
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:green'>Connect to site server, set resource service, and open map</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>ConnectToMapGuide() </span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=green face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:green'>'Clear all
layers in the map</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>Dim</span></font><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>
layerCollection</span></font> <font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>As</span></font><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>
MgLayerCollection = map.GetLayers()</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>If</span></font><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>
layerCollection.GetCount > 0</span></font> <font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>Then</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
layerCollection.Clear()</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>End</span></font>
<font size=2 color=blue face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:blue'>If</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>map.Save(resourceService)</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=green face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:green'>'emit javascript
to refresh map</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>Dim</span></font><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>
scriptKey</span></font> <font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>As</span></font> <font
size=2 color=blue face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:blue'>String</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> =</span></font> <font
size=2 color=maroon face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:maroon'>"ForceRefresh"</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>If</span></font> <font
size=2 color=blue face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:blue'>Not</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
Page.ClientScript.IsStartupScriptRegistered(<font color=blue><span
style='color:blue'>Me</span></font>.GetType, scriptKey)</span></font> <font
size=2 color=blue face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:blue'>Then</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> </span></font> <font
size=2 color=blue face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:blue'>Dim</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> javaScript</span></font> <font
size=2 color=blue face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:blue'>As</span></font> <font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>String</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> =</span></font> <font
size=2 color=maroon face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:maroon'>"refreshMap("</span></font><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>
& MapAction.RefreshMap &</span></font> <font size=2 color=maroon
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:maroon'>");"</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>
Page.ClientScript.RegisterStartupScript(<font color=blue><span
style='color:blue'>Me</span></font>.GetType, scriptKey, javaScript,</span></font>
<font size=2 color=blue face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:blue'>True</span></font><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>)</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>End</span></font>
<font size=2 color=blue face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:blue'>If</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><a name=""><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Regards,</span></font></a><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>Shane</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=gray face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:gray'>Operations IT</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=gray face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:gray'>Northern Natural Gas</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><font size=2 color=gray face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:gray'>402.398.7841</span></font><o:p></o:p></p>
<p style='margin-left:2.5in'><i><font size=2 color=gray face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:gray;font-style:italic'>We
think in generalities, but live in detail. </span></font></i><o:p></o:p></p>
<p style='margin-left:2.5in'><i><font size=2 color=gray face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:gray;font-style:italic'>-Alred
North Whitehead</span></font></i><o:p></o:p></p>
</div>
</blockquote>
</div>
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