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  Yesterday, a friend asked me, how kind dealing with overlapping controls, the controls for specified at the top. Me very crazy, I wonder why there is such a demand, but yesterday busy work, no time. This morning to the try to write some code, as follows: 
  SetMeTop located on the function button1_Click is a testing method, tested, this is feasible. 
  Why use a ArrryList rather than the direct use of index to be deleted, because the top of a delete controls, the controls will lead to the following have been added to an index, will produce some anomalies. 
  This is only a function of time on walls. Perhaps. Net itself directly there is a way to set up, I do not know. Huh .. 
  Welcome advice: AppleDotnet@hotmail.com 

  Void SetMeTop (object obj) 
  ( 
  / / Principle: the first component will be added at the top, can see the order is determined by the index. 
  This.Controls.GetChildIndex int index = ((Control) obj); / / to gain control of the Top index 
  ArrayList AL = new ArrayList ();// controls used to load containers 
  For (int i = 0; i <index; i ++)// the top to control the above controls are put into containers 
  AL.Add (this.Controls [i]); 
  For (int i = 0; i <AL.Count; i + +) 
  ( 
  / / Delete once and added an operation, it controls into the above to below. 
  This.Controls.Remove ((Control) AL [i]); 
  This.Controls.Add ((Control) AL [i]); 
  ) 
  ) 
  Private void button1_Click (object sender, System.EventArgs e) 
  ( 
  SetMeTop (sender); 
  ) 

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