this.SetStyle(ControlStyles.DoubleBuffer   |    
              ControlStyles.UserPaint   |    
              ControlStyles.AllPaintingInWmPaint,  
              true);  
  this.UpdateStyles();

------解决方案--------------------


设置窗口双缓冲模式看行不行

SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);
SetStyle(ControlStyles.DoubleBuffer, true);


------解决方案--------------------

this.SetStyle(ControlStyles.DoubleBuffer   |   
             ControlStyles.UserPaint   |   
             ControlStyles.AllPaintingInWmPaint, 
             true); 
 this.UpdateStyles();