/// <summary>

         /// 图片元素的绘制

         /// </summary>

         /// <param name="sender"></param>

         /// <param name="e"></param>

         private void toolStripButton_DrawPicElemnet_Click(object sender, EventArgs e)

         {

             //1.设置空间位置

             IPointCollection polygon = new PIE.Geometry.Polygon();

             polygon.AddPoint(, );

             polygon.AddPoint(, );

             polygon.AddPoint(, );

             polygon.AddPoint(, );

             polygon.AddPoint(, );

             //2.得到图片

             OpenFileDialog openFileDialog = new OpenFileDialog();

             openFileDialog.Filter = "Picture File|*.bmp";

             if (openFileDialog.ShowDialog() != DialogResult.OK) return;

             //3.设置元素的显示

             IPictureElement picElement = new PictureElement();

             picElement.SetImage(openFileDialog.FileName);

             picElement.SetVisibility(true);

             //4.在地图控件中显示图片元素

             picElement.Geometry = polygon as IGeometry;            mapControlMain.ActiveView.GraphicsContainer.AddElement(picElement);            mapControlMain.PartialRefresh(ViewDrawPhaseType.ViewAll);

         }