请编程遍历页面上所有TextBox控件并给它赋值为string.Empty？

  
    

   
     
   
     foreach
   
      (System.Windows.Forms.Control control 
   
     in
   
      
   
     this
   
     .Controls)
{
 
   
     if
   
      (control 
   
     is
   
      System.Windows.Forms.TextBox)
 {
 System.Windows.Forms.TextBox tb 
   
     =
   
      (System.Windows.Forms.TextBox)control ; 
 tb.Text 
   
     =
   
      String.Empty ;
 }
}