如何插入jpg？

• 回答：

          private void InsertImage()
          {
              OpenFileDialog ofd = new OpenFileDialog();
              ofd.Filter = "jpg 文件(*.jgp)|*.jpg";
  
              if (ofd.ShowDialog() != DialogResult.OK)
              {
                  return;    
              }
  
              Image tmpImage = null;
              try
              {
                  tmpImage = Image.FromFile(ofd.FileName);
              }
              catch(Exception exp)
              {
                  MessageBox.Show(exp.Message);
                  return;
              }
  
              if (tmpImage == null)
                  return;
  
              double dW = tmpImage.Width;
              double dH = tmpImage.Height;
              tmpImage = null;
  
              // 图片文件的插入点。
              MxDrawPoint point = (MxDrawPoint)(axMxDrawX1.GetPoint(false,0,0, "\n 指定插入点:") );
              if (point == null)
                  return;
  
  
              string sFilePath = ofd.FileName;
              string sFileName = sFilePath;
  
  
              MxDrawDatabase   database = (MxDrawDatabase)(axMxDrawX1.GetDatabase() );
              MxDrawDictionary dict = database.GetNamedObjectsDictionary();
              if (dict == null)
                  return;
  
              MxDrawDictionary imageDict = (MxDrawDictionary)(dict.GetAt("ACAD_IMAGE_DICT", false) );
              if(imageDict == null)
              {
                  // 增加一个字典对象。
                  imageDict = (MxDrawDictionary)(dict.AddObject("ACAD_IMAGE_DICT", "McDbDictionary") );
              }
  
              if (imageDict == null)
                  return;
  
              MxDrawRasterImageDef imgedef = (MxDrawRasterImageDef)(imageDict.GetAt(sFileName, false) );
              if(imgedef == null)
              {
                  imgedef = (MxDrawRasterImageDef)(imageDict.AddObject(sFileName, "McDbRasterImageDef"));
                  if (imgedef == null)
                      return;
              }
              imgedef.SourceFileName = sFileName;
  
              MxDrawBlockTableRecord curSpace = database.CurrentSpace();
              MxDrawVector3d uCorner = new MxDrawVector3d();
              uCorner.x  = dW;
  
              MxDrawVector3d vOnPlane = new MxDrawVector3d();
              vOnPlane.y = dH;
  
              curSpace.AddImage(point.x,point.y,uCorner.x,uCorner.y, vOnPlane.x,vOnPlane.y, imgedef.ObjectID);
  
              MxDrawApplication app = new MxDrawApplication();
              app.ZoomAll();
          }