This should be simple, but I cannot find any documentation on how to do it. I have a legend that is bound to my map that contains several layers. I do not want all of the layers to appear on my Legend so I am using LayerIDs. The problem is that I do not know how to use multiple ones in the LayerIDs. Below is my code:
XAML(Legend):
<esri:Legend Map="{Binding ElementName=MyMap}"
LayerIDs="CalvertCity, WaterValves"
LayerItemsMode="Tree"
ShowOnlyVisibleLayers="False">
<esri:Legend.MapLayerTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<CheckBox Content="{Binding Label}"
IsChecked="{Binding IsEnabled, Mode=TwoWay}"
IsEnabled="{Binding IsInScaleRange}" >
</CheckBox>
<Slider Maximum="1" Value="{Binding Layer.Opacity, Mode=TwoWay}" Width="50" />
</StackPanel>
</DataTemplate>
</esri:Legend.MapLayerTemplate>
<esri:Legend.LayerTemplate>
<DataTemplate>
<CheckBox Content="{Binding Label}"
IsChecked="{Binding IsEnabled, Mode=TwoWay}"
IsEnabled="{Binding IsInScaleRange}" >
</CheckBox>
</DataTemplate>
</esri:Legend.LayerTemplate>
</esri:Legend>
XAML(ESRI Maps):
<esri:Map x:Name="MyMap" Background="#FFE3E3E3" WrapAround="True" MouseRightButtonDown="MyMap_MouseRightButtonDown" Extent="-9834972.92753924,4441899.425293319,-9833977.88119163, 4442762.485358352">
<esri:Map.Layers>
<esri:ArcGISTiledMapServiceLayer ID="MyLayer" Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer" />
<esri:GraphicsLayer ID="CandidateGraphicsLayer">
<esri:GraphicsLayer.MapTip>
<Grid>
<Rectangle Stroke="Gray" RadiusX="10" RadiusY="10" Fill="#77FF0000" Margin="0,0,0,5" >
<Rectangle.Effect>
<DropShadowEffect/>
</Rectangle.Effect>
</Rectangle>
<Rectangle Fill="#DDFFFFFF" Stroke="DarkGray" RadiusX="5" RadiusY="5" Margin="10,10,10,15" />
<StackPanel Orientation="Vertical" HorizontalAlignment="Center" Margin="30,20,30,30">
<TextBlock Text="{Binding [Address]}" HorizontalAlignment="Left" Foreground="Black" />
</StackPanel>
</Grid>
</esri:GraphicsLayer.MapTip>
</esri:GraphicsLayer>
<esri:ArcGISDynamicMapServiceLayer ID="CalvertCity" Url="http://localhost:6080/arcgis/rest/services/CalvertCity_Test_2/MapServer"/>
<esri:FeatureLayer ID="WaterValves" Url="http://localhost:6080/arcgis/rest/services/CalvertCity_Test_2/MapServer/0" Renderer="{StaticResource MySimpleRenderer}"
OutFields="WVAL_ID,SIZE,WVAL_USE,WVAL_TYPE,OPENS,TURNS" MouseLeftButtonUp="FeatureLayer_MouseLeftButtonUp"/>
</esri:Map.Layers>
</esri:Map>