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    class _Default
    {
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           public string SetTb(string name)
           {
                return name;
           }
   }
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    protected void Page_Load(object sender, EventArgs e)
  {
      AjaxPro.Utility.RegisterTypeForAjax(typeof(_Default));
  }
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   function comit_onclick()
  {
¡¡  var name=document.getElementById("tb1").value;
¡¡  _Default.SetTb(name,callback);//ajax·½·¨µ÷ÓÃ,nameΪʵ¼Ê²ÎÊý,callback½ÓÊÜ·µ»ØÖµ
  }
  function callback(res)
 {
¡¡document.getElementById("tb").value=res.value;
 }
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