private void btnCreatPrj_Click(object sender, EventArgs e)
        {
            PrjCoordinateDefine prjCoordinateDefine = new PrjCoordinateDefine(_spatialReference, enumControlType.Creat);

            prjCoordinateDefine.Text = "新建投影坐标系";
            TryApplyPrj(prjCoordinateDefine);
            if (prjCoordinateDefine.DialogResult == System.Windows.Forms.DialogResult.OK)
            {
                NeedSaveToFile();
            }
        }
 private void TryApplyPrj(PrjCoordinateDefine prjCoordinateDefine)
 {
     prjCoordinateDefine.ShowDialog();
     if (prjCoordinateDefine.DialogResult == System.Windows.Forms.DialogResult.OK)
     {
         if (prjCoordinateDefine.SpatialReference != null)
         {
             _spatialReference      = prjCoordinateDefine.SpatialReference;
             txtSpatialRefInfo.Text = _spatialReference.ToString();
         }
     }
 }
 private void btnModify_Click(object sender, EventArgs e)
 {
     if (_spatialReference == null)
     {
         return;
     }
     _preSpatialReference = _spatialReference;
     if (_spatialReference.ProjectionCoordSystem == null)
     {
         GeoCoordinateDefine geoCoordinateDefine = new GeoCoordinateDefine(_spatialReference, enumControlType.Modify);
         geoCoordinateDefine.Text = "地理坐标系属性";
         TryApplyGeo(geoCoordinateDefine);
         if (geoCoordinateDefine.DialogResult == System.Windows.Forms.DialogResult.OK)
         {
             //IsSame()函数中没有对名字进行比较
             if (!_spatialReference.IsSame(_preSpatialReference) ||
                 (_spatialReference.GeographicsCoordSystem.Name != _preSpatialReference.GeographicsCoordSystem.Name))
             {
                 NeedSaveToFile();
             }
         }
     }
     else
     {
         PrjCoordinateDefine prjCoordinateDefine = new PrjCoordinateDefine(_spatialReference, enumControlType.Modify);
         prjCoordinateDefine.Text = "投影坐标系属性";
         TryApplyPrj(prjCoordinateDefine);
         if (prjCoordinateDefine.DialogResult == System.Windows.Forms.DialogResult.OK)
         {
             if (!_spatialReference.IsSame(_preSpatialReference) ||
                 (_spatialReference.GeographicsCoordSystem.Name != _preSpatialReference.GeographicsCoordSystem.Name) ||
                 (_spatialReference.Name != _preSpatialReference.Name))
             {
                 NeedSaveToFile();
             }
         }
     }
 }