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using
 System;   

  

/// <summary>
  

/// BasePage µÄÕªÒªÃèÊö
  

/// </summary>
  

public
 
class
 BasePage : System.Web.UI.Page
  

{   

    
public
 BasePage() { }   

}  

2¡¢ÔÚ BasePage Àà±ðµ×ÏÂ׫д SetActionStamp ·½·¨£¬Ä¿µÄÊÇÔÚ Session ´æ·ÅÒ»¸öϵͳʱ¼ä´Á¼Ç¡£
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/// <summary>
  

/// 設ÖôÁ記
  

/// </summary>
  

private
 
void
 SetActionStamp()
  

{   

    Session[
"actionStamp"
] = Server.UrlEncode(DateTime.Now.ToString());
  

}  

3¡¢´¦Àí PreRender ʼþ£¬ÔÚÍøÒ³³õ´ÎÔØÈëʱÉèÖôÁ¼Ç£¬ÇÒÿ´ÎÔØÈëÖ´ÐÐʱ»á°Ñ¸Ã´Á¼Ç´æ·Åµ½ HiddenField Àï¡£
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public
 BasePage() { 
this
.PreRender += 
new
 EventHandler(Page_PreRender); }
  

  

void
 Page_PreRender(
object
 sender, EventArgs e)
  

{   

    
if
 (!IsPostBack)   

    {   

        SetActionStamp();   

    }   

  

    ClientScript.RegisterHiddenField(
"actionStamp"
, Session[
"actionStamp"
].ToString());
  

}  

4¡¢×Ô¶© IsRefresh ÊôÐÔ£¬½åÓÉÅÐ¶Ï HiddenField ´æ·ÅµÄ´Á¼ÇÊÇ·ñµÈÓÚ Session
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protected void btn_Click(object sender, EventArgs e)
{
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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
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