FeatureLayer visibility binding to checkbox

[bayramüçüncü]

I have used the sample here.
But I added a checkbox and bind it to feature layers visibility. But not worked.

<esri:Map x:Name="MyMap" WrapAround="True" Extent="-15000000,2000000,-7000000,8000000">
            <esri:ArcGISTiledMapServiceLayer ID="StreetMapLayer"
                    Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer"/>

            <esri:FeatureLayer ID="MyFeatureLayer"
                    Url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/Map..."
                    Where="POP1990 > 100000" Renderer="{StaticResource MySimplePointRenderer}"
                    Visible="{Binding ElementName=checkBox1,Path=IsChecked,Mode=TwoWay}"/>
        </esri:Map>
       <CheckBox Content="CheckBox" Height="16" HorizontalAlignment="Left" Margin="25,12,0,0" Name="checkBox1" VerticalAlignment="Top" />

[DominiqueBroux · Accepted solution]

Hi Bayram,

The layers are not FrameworkElements and thus have no DataContext. So binding to an element name that is supposed to be in the Visual Tree doesn't work.

You can get it working by initiating the binding from the checkbox. Something like:

<esri:Map x:Name="MyMap" WrapAround="True" Extent="-15000000,2000000,-7000000,8000000"> <esri:ArcGISTiledMapServiceLayer ID="StreetMapLayer" Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer"/>  <esri:FeatureLayer ID="MyFeatureLayer" Url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/0"  Where="POP1990 > 100000" Renderer="{StaticResource MySimplePointRenderer}"/> </esri:Map> <CheckBox Content="CheckBox" Height="16" HorizontalAlignment="Left" Margin="25,12,0,0" VerticalAlignment="Top"        DataContext="{Binding Layers, ElementName=MyMap}"       IsChecked="{Binding [MyFeatureLayer].Visible, Mode=TwoWay}" />