网站访问量

       <li>访问量：<asp:Literal ID="ltlVistorNum" runat="server"></asp:Literal></li> 

using System;
using System.Xml;
using System.IO;public partial class Controls_Footer : System.Web.UI.UserControl {     protected void Page_Load(object sender, EventArgs e)     {         if (!IsPostBack)         {             string vistorNumFile = Server.MapPath("~/") + "vistorNum.xml";             XmlDocument xmldoc = new XmlDocument();             try             {                 if (!File.Exists(vistorNumFile))                 {                     xmldoc.AppendChild(xmldoc.CreateXmlDeclaration("1.0", "UTF-8", null));                     XmlElement firstElement = xmldoc.CreateElement("", "data", "");                     xmldoc.AppendChild(firstElement);                     XmlElement secondElement = xmldoc.CreateElement("vistorNumber");                     secondElement.InnerText = "8000500";                     firstElement.AppendChild(secondElement);                     ltlVistorNum.Text = secondElement.InnerText;                 }                 else                 {                     xmldoc.Load(vistorNumFile);//xmlPath为xml文件路径                     XmlNode xmlNode = xmldoc.SelectSingleNode("/data/vistorNumber");                     xmlNode.InnerText = (Convert.ToInt32(xmlNode.InnerText) + 1) + "";                     ltlVistorNum.Text = xmlNode.InnerText;                 }                 xmldoc.Save(vistorNumFile);             }             catch             {                 ltlVistorNum.Text = "8000000";             }             finally             {                 xmldoc = null;             }         }     } }