select表单元素实现页面重新绑定

 <select id="menuSelect" name="menuSelect" runat="server" onchange="UpdatePageSize()">
                    <option selected>12</option>
                    <option>15</option>
                    <option>20</option>
                    <option>30</option>
                    <option>50</option>

</select>

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 <script type="text/javascript">
        function UpdatePageSize() {
            var $pageSize = $("#menuSelect").val();
          
            window.location.href = "AccountManage.aspx?pageSize=" + $pageSize;
        }
    </script>

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C#

 string pageSizeStr = Request.QueryString["pageSize"];
                int pageSize = 0;
                FamilyAccountDataContext db = new FamilyAccountDataContext();
                if (int.TryParse(pageSizeStr, out pageSize))
                {
                    this.RepeaterAccount.DataSource = db.AccountTable.OrderByDescending(a => a.Date).Take(pageSize);
                    this.RepeaterAccount.DataBind();
                    this.menuSelect.Value = pageSize.ToString();
                }
                else
                {
                    this.RepeaterAccount.DataSource = db.AccountTable.OrderByDescending(a => a.Date).Take(12);
                    this.RepeaterAccount.DataBind();
                }

小结：利用jquery ajax 获取select option的值，然后重定向的该页面，并将select option值通过url传递，页面加载时获取这个值，实现数据重新绑定。回头来看很简单，但耗费了我好几个小时的时间解决。记录下来，希望能帮助需要的人。