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关于返回前面的页面。如何两者兼得,自问自答

作者: unknow
private void Page_Load(object sender, System.EventArgs e)
        {
            
            ViewState["submittimes"]=Convert.ToInt32(ViewState["submittimes"])+1;
                        if(!Page.IsPostBack)
            {
                ViewState["submittimes"]=1;


            }
        }

页面:
<INPUT type="button" value="Button" onclick=@#history.go(-<%= (int)ViewState["submittimes"] %>)@#>  
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