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<DIV dir=ltr align=left><SPAN class=370030320-15012007><FONT face=Arial
color=#0000ff size=2>Ok. I just assumed you were using the HTML
viewer. Oops. But there is something strange going on here.
When layers are added or removed from a map, I think the DWF viewer should be
sending REFRESHLAYERS=1. Does your Javascript force a
refresh?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=370030320-15012007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=370030320-15012007><FONT face=Arial
color=#0000ff size=2>Thanks,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=370030320-15012007><FONT face=Arial
color=#0000ff size=2>Trevor </FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> Buscher, Shane
[mailto:Shane.Buscher@nngco.com] <BR><B>Sent:</B> Monday, January 15, 2007 12:42
PM<BR><B>To:</B> Trevor Wekel; Mapguide_users@lists.osgeo.org<BR><B>Subject:</B>
RE: [Mapguide_users] FW: Remove layers at runtime<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Trevor,
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I am not using tile
layers, so we can rule that out. <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I did some tracing with
Fiddler, but don’t see any GETDYNAMICMAPOVERLAY requests generated when adding
or removing layers. I do see a GETMAPUPDATE request though, as indicated
below. Hopefully I’m using this tool correctly…
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">= BODY
====<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
OPERATION=GETMAPUPDATE<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
VERSION=1.0<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SESSION=a00f84fc-ffff-ffff-8000-00c09f545772_en<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
MAPNAME=ValveTracker<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SEQNO=4<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
DWFVERSION=6.01<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
EMAPVERSION=1.0<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SETVIEWCENTERX=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SETVIEWCENTERY=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SETVIEWSCALE=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SETDATAEXTENT=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SETDISPLAYDPI=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SHOWLAYERS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
HIDELAYERS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SHOWGROUPS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
HIDEGROUPS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
REFRESHLAYERS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">So here’s the deal that
I’m seeing. Since layers only get truly removed when I’m outside their map
extent, I’m forced to pan/zoom to check if they get removed. I noticed
that in addition to the GETMAPUPDATE request, a SETDATAEXTENT request occurs
when panning/zooming: <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">= BODY
====<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
OPERATION=GETMAPUPDATE<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
VERSION=1.0<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SESSION=566b7e04-0000-1000-8002-00c09f545772_en<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
MAPNAME=ValveTracker<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SEQNO=8<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
DWFVERSION=6.01<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
EMAPVERSION=1.0<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SETVIEWCENTERX=-0.36343368150266142<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SETVIEWCENTERY=10.30699821218915<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SETVIEWSCALE=273.01327740352997<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">SETDATAEXTENT=-27.812650640092706,-5.6930033069966921,27.085783224455135,26.306998693000587<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SETDISPLAYDPI=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SHOWLAYERS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
HIDELAYERS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
SHOWGROUPS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
HIDEGROUPS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">
REFRESHLAYERS=<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I think the
SETDATAEXTENT is doing something to make this work. Note that I’m also
noticing when I’m removing layers within my map extent, then perform pan/zoom
operations the layers I’m trying to remove sometimes leave artifacts (layers are
partially removed). <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Let me know if I can
help out any more. I’d really like to get this working.
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Regards,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Shane<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> Trevor
Wekel [mailto:trevor.wekel@autodesk.com] <BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Monday, January 15, 2007 12:12
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">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: 0.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Hi
Shane,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 0.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 0.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 0.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 0.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Thanks,</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Trevor</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal
style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 0.5in; MARGIN-RIGHT: 0in; mso-margin-top-alt: 0in"><B><FONT
face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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: 0.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Trevor,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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. <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Regards,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Shane<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<DIV style="MARGIN-LEFT: 0.5in">
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Hi
Shane,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Thanks,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Trevor</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV style="MARGIN-LEFT: 0.5in">
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV></DIV>
<P class=MsoNormal
style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 1in; MARGIN-RIGHT: 0in; mso-margin-top-alt: 0in"><B><FONT
face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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: 1in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Trevor,</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Regards,</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Shane</SPAN></FONT><o:p></o:p></P></DIV></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV style="MARGIN-LEFT: 0.5in">
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV></DIV>
<P class=MsoNormal
style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 1in; MARGIN-RIGHT: 0in; mso-margin-top-alt: 0in"><B><FONT
face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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: 1in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Hi
Shane,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Thanks,<BR>Trevor</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV style="MARGIN-LEFT: 0.5in">
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV></DIV>
<P class=MsoNormal
style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 1in; MARGIN-RIGHT: 0in; mso-margin-top-alt: 0in"><B><FONT
face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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: 1in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Trevor,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Regards,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Shane</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New" color=green
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: green; FONT-FAMILY: 'Courier New'">‘class
vars</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New" color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Private</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New" color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Private</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New" color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Private</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
siteConn.Open(userInfo)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
resourceService =
siteConn.CreateService(MgServiceType.ResourceService)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New" color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">End</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New" color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Protected</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in; TEXT-INDENT: 0.5in"><FONT
face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">
Dim</SPAN></FONT><FONT face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1.5in; TEXT-INDENT: 0.5in"><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
map.GetLayers.Insert(index, schematic)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1.5in"><FONT face="Courier New"
color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">
Dim</SPAN></FONT><FONT face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1.5in; TEXT-INDENT: 0.5in"><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
map.GetLayers.Insert(index, valves)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
map.Save(resourceService)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New" color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">End</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New" color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Protected</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
map.GetLayers.Remove(lyr0)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
map.GetLayers.Remove(lyr1)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
map.Save(resourceService)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1in"><FONT face="Courier New"
size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Courier New" color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">End</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 1in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<DIV>
<DIV style="MARGIN-LEFT: 0.5in">
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Hi
Shane,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">MgMap.Open()</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">MgMap.GetLayers().Insert(layer)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">MgMap.Save()</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">If the
Insert() works and Remove() doesn't</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">MgMap.Open()</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">MgMap.GetLayers().Remove(layer)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">MgMap.Save()</SPAN></FONT><o:p></o:p></P>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">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: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Thanks,</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=blue
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Trevor</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV style="MARGIN-LEFT: 0.5in">
<DIV style="MARGIN-LEFT: 0.5in">
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV></DIV></DIV>
<P class=MsoNormal
style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 1.5in; MARGIN-RIGHT: 0in; mso-margin-top-alt: 0in"><B><FONT
face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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: 1.5in"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><I><FONT face=StoneSans
size=1><SPAN
style="FONT-SIZE: 9pt; FONT-STYLE: italic; FONT-FAMILY: StoneSans">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: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=navy
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Thanks for
any help in advance. </SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Regards,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 1.5in"><FONT face=Arial color=navy
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Shane</SPAN></FONT><o:p></o:p></P>
<DIV>
<DIV style="MARGIN-LEFT: 0.5in">
<DIV style="MARGIN-LEFT: 0.5in">
<DIV style="MARGIN-LEFT: 0.5in">
<DIV class=MsoNormal style="MARGIN-LEFT: 0.5in; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV></DIV></DIV></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 2in"><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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: 2in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P style="MARGIN-LEFT: 2in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; 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 face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 2in"><FONT face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; 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: 2in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">‘</SPAN></FONT><FONT
face="Courier New" color=green size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: green; FONT-FAMILY: 'Courier New'">Connect to
site server, set resource service, and open map</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">ConnectToMapGuide()
</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" color=green size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: green; FONT-FAMILY: 'Courier New'">'Clear all
layers in the map</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Dim</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
layerCollection</SPAN></FONT> <FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">As</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"> MgLayerCollection =
map.GetLayers()</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">If</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"> layerCollection.GetCount
> 0</SPAN></FONT> <FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Then</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
layerCollection.Clear()</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">End</SPAN></FONT>
<FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">If</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">map.Save(resourceService)</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" color=green size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: green; FONT-FAMILY: 'Courier New'">'emit
javascript to refresh map</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Dim</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"> scriptKey</SPAN></FONT>
<FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">As</SPAN></FONT>
<FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">String</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"> =</SPAN></FONT> <FONT
face="Courier New" color=maroon size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: maroon; FONT-FAMILY: 'Courier New'">"ForceRefresh"</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">If</SPAN></FONT>
<FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Not</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
Page.ClientScript.IsStartupScriptRegistered(<FONT color=blue><SPAN
style="COLOR: blue">Me</SPAN></FONT>.GetType, scriptKey)</SPAN></FONT> <FONT
face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Then</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"> </SPAN></FONT> <FONT
face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">Dim</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"> javaScript</SPAN></FONT>
<FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">As</SPAN></FONT>
<FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">String</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"> =</SPAN></FONT> <FONT
face="Courier New" color=maroon size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: maroon; FONT-FAMILY: 'Courier New'">"refreshMap("</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"> & MapAction.RefreshMap
&</SPAN></FONT> <FONT face="Courier New" color=maroon size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: maroon; FONT-FAMILY: 'Courier New'">");"</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">
Page.ClientScript.RegisterStartupScript(<FONT color=blue><SPAN
style="COLOR: blue">Me</SPAN></FONT>.GetType, scriptKey,
javaScript,</SPAN></FONT> <FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">True</SPAN></FONT><FONT
face="Courier New" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">)</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">End</SPAN></FONT>
<FONT face="Courier New" color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Courier New'">If</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><A name=""><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Regards,</SPAN></FONT></A><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Shane</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face=Arial color=gray size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial">Operations
IT</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face=Arial color=gray size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial">Northern Natural
Gas</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><FONT face=Arial color=gray size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial">402.398.7841</SPAN></FONT><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><I><FONT face=Arial color=gray size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-STYLE: italic; FONT-FAMILY: Arial">We
think in generalities, but live in detail.
</SPAN></FONT></I><o:p></o:p></P>
<P style="MARGIN-LEFT: 2in"><I><FONT face=Arial color=gray size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-STYLE: italic; FONT-FAMILY: Arial">-Alred
North Whitehead</SPAN></FONT></I><o:p></o:p></P></DIV></DIV></BODY></HTML>