wpf arcglobe +c# 三维缩放到图层

///
<summary>
        ///
地图缩放到图层
        ///
</summary>
        /// <param
name="sender"></param>
       
/// <param
name="e"></param>
        private
void button5_Click(object sender, RoutedEventArgs
e)
       
{
           
ESRI.ArcGIS.Analyst3D.IScene _Scene = _GlobeControl.Globe as
ESRI.ArcGIS.Analyst3D.IScene;
           
ESRI.ArcGIS.Carto.ILayer _ILayer =
_Scene.get_Layer(0);//获取要缩放的图层
           
ESRI.ArcGIS.Geometry.IEnvelope _IEnvelope =
_ILayer.AreaOfInterest.Envelope;
           
ICamera _ICamera =
_GlobeControl.GlobeDisplay.ActiveViewer.Camera;
           
IGlobeCamera _IGlobeCamera = _ICamera as
IGlobeCamera;
           
ISceneViewer _ISceneViewer =
_GlobeControl.GlobeDisplay.ActiveViewer;
           
_IGlobeCamera.SetToZoomToExtents(_IEnvelope, _GlobeControl.Globe,
_ISceneViewer);
        }