[mapguide-users] Ajax Viewer and iFrames in ASP.NET - has anyone perfected this?

[Brad L]

You will probably have to use a client side script for this since the frames
are loading on the client.  I don't know if this is the best way but I use
onload event of a frame with size zero in the same frameset as my viewer.

<frameset rows="*,0" border="0" framespacing="0">
    <!--<frame src="/mapguide/mapviewernet/AJAXviewer.aspx?SESSION=<%=
sessionID %>&WEBLAYOUT=<%=webLayout %>"  name="ViewerFrame" />-->
    <frame src="/mapguide/mapviewernet/AJAXviewer.aspx?SESSION=<%= sessionID
%>&WEBLAYOUT=<%=webLayout %>" name="ViewerFrame" />
    <frame src="blank.htm" onload="check_map();"/>
    <!--<frame />-->
</frameset>

I then set an interval in javascript

function check_map()
        {
        initMap=setInterval('loadWatchInitialized()',200);
        //set the interval to whatever you need
        }

my interval checks to see when certain frames in the viewer are loaded

function loadWatchInitialized()
        {
            if (findexists('ViewerFrame')){
                if(mapframeexists('formFrame')){
                    if(ViewerFrame.mapFrame.mapInit)
                    {
                        clearInterval(initMap);
                        create_Map();
                    }
                }
            }
        }

function findexists(what) {
            for (var i=0;i<window.frames.length;i++) {
                if (window.frames[i].name == what)
                return true;
            }
            return false;
        }
        function mapframeexists(what) {
            for (var i=0;i<ViewerFrame.frames.length;i++) {
                if (ViewerFrame.frames[i].name == what);
                return true;
            }
            return false;
        }

I can then load my .net code into the formframe of the viewer to execute 
        function create_Map()
        {
            ViewerFrame.formFrame.location.href='MyCode.aspx'
        }

You could also just call the create_Map() script in the onload event for the
mapviewer frame but I found that this runs after everything in the
ViewerFrame had loaded.

Hopefully this helps

Brad Leighninger
Mathews & Associates, Inc
417-869-6009


BruceWeston wrote:
> 
> Hello folks,
> 
> I've been trying to create a 3-iframed web application in .NET, but I'm
> spending quite a bit of time trying to figure out when the AJAX viewer has
> been loaded in my code. I want to do this using my C# code behind instead
> of Javascript. Ideally, I'd like to use a call to a method which would
> return me a definite yes or no, then delay the loading of the iframes
> until the session is firmly established. Any ideas? Someone must have done
> something like this before......
> 
> Thanks in advance!
> 
> 
> 

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