void onLayerInfosCompleted(LayerInfosEventArgs e)
 {
     LayerExtensions.SetLayerInfos(Layer, e.LayerInfos);
     if (GetLayerInfosCompleted != null)
     {
         GetLayerInfosCompleted(this, e);
     }
 }
 void onLayerInfosCompleted(LayerInfosEventArgs e)
 {
     LayerExtensions.SetLayerInfos(Layer, e.LayerInfos);      
     if (GetLayerInfosCompleted != null)
         GetLayerInfosCompleted(this, e);
 }