后台代码绑定xml作为Repeater的数据源，Page_Load事件被执行2次！

Question

protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { Init("", "", "", "", "", ""); } if (Request.QueryString["do"] != null && Request.QueryString["do"] == "list") { Init("", "", "", "", "", ""); } } ///<summary> /// 初始document ///</summary> ///<param name="outCity1">起飞城市（中文）</param> ///<param name="toCity1">到达城市（中文）</param> ///<param name="outCode1">起飞城市（Code）</param> ///<param name="toCode1">到达城市（Code）</param> ///<param name="outDate1">起飞日期</param> ///<param name="type1">航程类型</param> private void Init(string outCity1, string toCity1, string outCode1, string toCode1, string outDate1, string type1) { //接收 往返、联程时 选择下一程 传递的参数 string outCity = outCity1; string toCity = toCity1; string outCode = outCode1; string toCode = toCode1; string outDate = outDate1; string toDate = ""; string type = type1; if (Request.QueryString["do"] == "list") //接收本页面 查询 按钮 传递的参数 { outCity = Request.Form["seach_outCity"].ToString(); toCity = Request.Form["seach_toCtiy"].ToString(); outCode = Request.Form["seach_outCode"].ToString(); toCode = Request.Form["seach_toCode"].ToString(); outDate = Request.Form["seach_outDate"].ToString(); toDate = Request.Form["seach_toDate"].ToString(); type = Request.Form["seach_type"].ToString(); } else if (outCity == "") //接收首页 查询 按钮 传递的参数 { outCity = Request.QueryString["seach_outCity"].ToString(); toCity = Request.QueryString["seach_toCtiy"].ToString(); outCode = Request.QueryString["seach_outCode"].ToString(); toCode = Request.QueryString["seach_toCode"].ToString(); outDate = Request.QueryString["seach_outDate"].ToString(); toDate = Request.QueryString["seach_toDate"].ToString(); type = Request.QueryString["seach_type"].ToString(); } //开始填充 document this.lOutToCity.Text = outCity + " -- " + toCity; this.lToOutCity.Text = outCity + " - " + toCity; this.lOutDate.Text = Convert.ToDateTime(outDate).ToString("D"); //获取低价信息 DataTable dtPromotion = ssc.GetPromotionByCity(outCode, toCode, DateTime.Now.AddDays(1).ToString("d") + " 00:00:00", DateTime.Now.AddDays(9).ToString("d") + " 23:59:59"); this.Repeater1.DataSource = dtPromotion; this.Repeater1.DataBind(); //获取航班信息 string xml = ssc.SeachToDayFlightInfo(outCode, toCode, Convert.ToDateTime(outDate), "0600"); XmlDocument doc = new XmlDocument(); doc.LoadXml(xml); this.Repeater2.DataSource = doc.DocumentElement.ChildNodes; this.Repeater2.DataBind(); this.hidNum.Value = (doc.DocumentElement.ChildNodes.Count + 10).ToString(); Session["mark"] = "0"; } 我后台用xml作为Repeater的数据源，可以每次Page_Load事件会被执行2次，找了好长时间，未能找到原因。高手给回应吧！

Answer 1

Page_Load事件改为：

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Init("", "", "", "", "", "");
        }
        else
        {
            if (Request.QueryString["do"] != null && Request.QueryString["do"] == "list")
            { 
                Init("", "", "", "", "", "");
            }
        }
    }

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