//得到缩略图
 public void GetMiniature()
 {
     if (this.flatTabControl1.SelectedIndex >= 0)
     {
         GDIDrawFlow.DrawFlowControl dfControl = this.GetCurrentFlowControl;
         dfControl.GetBitmap();
     }
 }
 public string GetImage()
 {
     GDIDrawFlow.DrawFlowControl dfControl = this.GetCurrentFlowControl;
     return(dfControl.GetBitmap());
 }
 /// <summary>
 ///返回给客户端的XML
 /// </summary>
 /// <returns></returns>
 public string GetControlXml()
 {
     GDIDrawFlow.DrawFlowControl dfControl = this.GetCurrentFlowControl;
     return(dfControl.GetControlXml());
 }