void webMap_GetMapCompleted(object sender, GetMapCompletedEventArgs e)
{
if (e.Error == null)
{
MyMap.Extent = e.Map.Extent;
LayerCollection layerCollection = new LayerCollection();
foreach (Layer layer in e.Map.Layers)
layerCollection.Add(layer);
GraphicsLayer selectedGraphics = new GraphicsLayer()
{
RendererTakesPrecedence = false,
ID = "MySelectionGraphicsLayer"
};
layerCollection.Add(selectedGraphics);
e.Map.Layers.Clear();
MyMap.Layers = layerCollection;
}
}