/// <summary>
 /// 设置编辑图层
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void cmbSelLayer_SelectedIndexChanged(object sender, EventArgs e)
 {
     try
     {
         string sLyrName = cmbSelLayer.SelectedItem.ToString();
         mCurrentLyr = MapOperation.GetLayerByName(mMap, sLyrName) as IFeatureLayer;
         mEngineEditLayers.SetTargetLayer(mCurrentLyr, 0);
     }
     catch (Exception ex)
     {
     }
 }