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4. <asp:ScriptManager runat="server" ID="sm" ScriptMode="Release" EnablePartialRendering="false"
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using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
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protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        ViewState["BackUrl"] = Request.UrlReferrer.ToString();
    }
}
/// <summary>
/// ·µ»Ø°´Å¥µã»÷ʼþ
/// </summary& ......

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var p = new Pager(5, 10);
p.init('Ò³ÂëËùÔÚµÄÈÝÆ÷ID', dataOp);
function dataOp() {
// ajaxÊý¾Ý²Ù×÷
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