private void Close_unLoad(object sender, RoutedEventArgs e)
 {
     if (m_measureCtrl != null)
     {
         m_measureCtrl.Close();
         m_measureCtrl         = null;
         this.iMSMap1.OperType = IMSOperType.Drag;
     }
 }
 private void img_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
 {
     if (m_measureCtrl == null)
     {
         m_measureCtrl = new ZDIMSDemo.Controls.Measure();
         m_measureCtrl.MapContainer    = iMSMap1;
         m_measureCtrl.m_graphicsLayer = graphicsLayer1;
     }
     m_measureCtrl.Show();
 }