太阳

 运用递归函数找到一个服务器控件，我们时常搞不清楚我们的控件到底在控件树的什么地方！看到老外写了一篇文章，呵呵！不过用递归算法，效率差了些，一般清楚控件树结构的情况下，还是直接用FindControl函数好一点！

This recursive function finds a control on a form by its name.

//written in C#

/// &ltsummary>
///Recursive function to find control on the form by its name
/// </summary>
private Control _co;
private Control _find_control(Control _c, string _name)
{
   if (_co != null) return _co;
   IEnumerator _ir =  _c.Controls.GetEnumerator(); 
   _ir.Reset();
   while (_ir.MoveNext())
   {
      if (_co != null) break;
      if (((Control)_ir.Current).Name == _name)
      {
         _co = ((Control)_ir.Current);   
         break;
      }
      _find_control(((Control)_ir.Current),_name);
   }
   return _co;
}

//usage examples

Form1 _fm = (Form1)this.FindForm();
_co = null;
DataGrid _dg = (DataGrid)_find_control((Control)_fm,"GRID1");
_co = null;
Label _lbl = (Label)_find_control((Control)_fm,"Label1");

By Yuriy Bas　in www.devx.com