Overview map does not show contents until after view extent changed

Question

Re: the sample at http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#OverviewMap

Switch to the XAML page then the Live Sample page, and note that the overview map initially does not draw. You need to pan/zoom the map before the overview map initialises.

This also happens when I compile and run this code locally. Any ideas why the overview map doesn't show immediately?

Thanks,
Steve

JenniferNery · Answer

Re: the sample at http://help.arcgis.com/en/webapi/sil...tm#OverviewMap

Switch to the XAML page then the Live Sample page, and note that the overview map initially does not draw. You need to pan/zoom the map before the overview map initialises.

This also happens when I compile and run this code locally. Any ideas why the overview map doesn't show immediately?

This will be fixed in the next release.

NeilDuxbury · Answer

The overview map works whatever the layer provided that the spatial reference be the same than the main map.

Are there any plans to allow the spatial reference of the overview map to be set in the same way as the regular map control?

Currently it appears that there is no way to change the spatial reference of the overview map control after it has been created or to explicitly set the spatial reference.

It would be helpful if setting the MaximumExtent property when the Layer property is null would cause the spatial reference to be set on the overview map.

Thanks,
Neil

PaulHuppé · Answer

I think that was the clue I needed. I removed the MaximumExtent="-180,-90,180,90" from the Overviewmap control definition, and it now works fine.

Thanks,
Paul