void WebMapKML_MouseLeftButtonUp(object sender, GraphicMouseButtonEventArgs e)
{
GraphicsLayer glayer = sender as GraphicsLayer;
MapPoint clickPoint = MyMap.ScreenToMap(e.GetPosition(MyMap));
MyInfoWindow.Anchor = clickPoint;
MyInfoWindow.Content = e.Graphic.Attributes["name"];
MyInfoWindow.IsOpen = true;
}