1 /// 
 2 /// 先在窗体上添加LicenceControl控件 3 /// Enable 3D analysis 4 /// 
 5 public void Enable3DAnalysis() 6 { 7     ESRI.ArcGIS.esriSystem.IExtensionManagerAdmin iExtensionManagerAdmin = new ESRI.ArcGIS.esriSystem.ExtensionManagerClass(); 8     UID iUid3D = new UIDClass(); 9     iUid3D.Value = "{94305472-592E-11D4-80EE-00C04FA0ADF8}";10     object o = new object();11     iExtensionManagerAdmin.AddExtension(iUid3D, ref o);12     IExtensionConfig iExtensionConfig = (IExtensionConfig)(iExtensionManagerAdmin as IExtensionManager).FindExtension(iUid3D);13     iExtensionConfig.State = esriExtensionState.esriESEnabled;14 }