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  protected void Page_Load(object sender, EventArgs e)
    {
        lblValue.Text = string.Format("{0:N}", 2500000);
        lblValue.Text = string.Format("{0:C3}", 2);
        // ¼ÓÔØÊ±²»»º´æÊý¾Ý
        Response.Cache.SetNoStore();
        if (!IsPostBack)
        {
            // ³õʼ»¯Ò³ÃæÏÔʾ
            ShowXml();
        }
    }
    // ³õʼ»¯Ò³ÃæÏÔʾ
    private void ShowXml()
    {
        // »ñÈ¡xmlÊý¾Ý
        string url = Server.MapPath("user.xml");
        StreamReader sr = new StreamReader(url, System.Text.Encoding.GetEncoding("GB2312"));
        // ²Ù×÷xmlÎĵµ
        XmlDataDocument xmlDataDocument = new XmlDataDocument();
        // ½«¶ÁÈ¡µÄ×Ö½ÚÁ÷±£´æµ½DataSetÖÐ
        xmlDataDocument.DataSet.ReadXml(sr);
        this.DataGrid1.DataSource = xmlDataDocument.DataSet.Tables[0].DefaultView;
        // ¶¨ÒåÏÔʾID
        this.DataGrid1.DataKeyField = "username";
        this.DataGrid1.DataBind();
        xmlDataDocument = null;
        sr.Close();
    }
    protected override void OnInit(EventArgs e)
    {


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using System.Web;
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