topic Re: Minor problem with Legend control in ArcGIS API for Silverlight Questions

Minor problem with Legend control

ChrisNorth — Thu, 02 Dec 2010 23:07:36 GMT

Hi,

I downloaded v2.1 this afternoon, and just added the Legend control into my application.

At runtime, the legend control works great. But, when I try to view the Design of my XAML page, VS throws an "InvalidCastException". Details are...

Unable to cast object of type 'Microsoft.Expression.DesignModel.DocumentModel.DocumentPrimitiveNode' to type 'Microsoft.Expression.DesignModel.DocumentModel.DocumentCompositeNode'.
at Microsoft.Expression.DesignModel.InstanceBuilders.ArrayInstanceBuilder.InstantiateTargetType(IInstanceBuilderContext context, ViewNode viewNode)
at Microsoft.Expression.DesignModel.InstanceBuilders.ClrObjectInstanceBuilder.Instantiate(IInstanceBuilderContext context, ViewNode viewNode)
at Microsoft.Expression.DesignModel.Core.ViewNodeManager.Instantiate(ViewNode viewNode)

Like I said, the legend works fine at runtime. In the XAML editor, my XAML code is:

<Border Background="#77919191" BorderThickness="1" CornerRadius="5"
HorizontalAlignment="Right" VerticalAlignment="Top"
Margin="20" Padding="5" BorderBrush="Black" >
<esri:Legend Map="{Binding ElementName=MyMap}"
LayerIDs="Businesses, Community Facilities, Education, Base Map Layer"
LayerItemsMode="Flat"
/>
</Border>

Curiously, the XAML editor underlines the "LayerIDs=.." tag, and the tooltip shows the same cast error.

Am I missing something?

Chris

PS - The control (at runtime) is fantastic by the way - nice job.

Re: Minor problem with Legend control

DominiqueBroux — Fri, 03 Dec 2010 07:44:54 GMT

This is a VS2010 bug and unfortunately, we didn't find any workaround.
It only happens in design view of VS2010.

This is the same bug that VisibleLayers one : http://forums.arcgis.com/threads/18545-VisibleLayers-error

Re: Minor problem with Legend control

ChrisNorth — Sat, 04 Dec 2010 00:48:52 GMT

OK. Thanks for the prompt reply.

Re: Minor problem with Legend control

OlegLukyanov — Wed, 03 Aug 2011 12:24:00 GMT

This is a VS2010 bug and unfortunately, we didn't find any workaround.
It only happens in design view of VS2010.

This is the same bug that VisibleLayers one : http://forums.arcgis.com/threads/18545-VisibleLayers-error

Did you find any workaround for Legend control now? Is it possible to use it in 2.2 API?

Thanks

Re: Minor problem with Legend control

DominiqueBroux — Wed, 03 Aug 2011 13:26:13 GMT

Did you find any workaround for Legend control now?

We didn't find any workaround yet.

Is it possible to use it in 2.2 API?

Despite this error in the design view, your code will compile and run correctly.

Re: Minor problem with Legend control

KevinMayo — Sun, 25 Sep 2011 23:03:07 GMT

Grrrrr.... this line is breaking my intellisense in VS.