简单ASP.NET + XML计数器

有时要想做一个纯粹的计数流量器,可以采用XML来替代数据库,速度特快.

counter.aspx

<%@ Page Language="C#" Debug="true" codepage="936"%> 
<%@ Import Namespace="System"%> 
<%@ Import Namespace="System.IO" %> 
<%@ Import Namespace="System.Xml" %>

<script language="c#" runat="server">
//*****************************************************
// 调用方法
//     计数: counter.aspx?count=yes
//     显示: counter.aspx
//*****************************************************


public string Exec = string.Empty;

private void Page_Load(object sender, System.EventArgs e)
{
    string fileName = "counter.xml";
    string filePath = Server.MapPath(fileName);
    if ( File.Exists(filePath) )
    {
        Exec = Request.QueryString["count"];
        if ( Exec != null && Exec != string.Empty )
        {
            XmlDocument xdoc = new XmlDocument();
            try
            {
                xdoc.Load(filePath);
                XmlNodeList xnl = xdoc.GetElementsByTagName("Datas");
                XmlNode xn = xnl[0];

                XmlNode SettingNode = xn.FirstChild;
                int Counts = int.Parse(SettingNode.InnerText) + 1;
                SettingNode.InnerText = Counts.ToString();
                xdoc.Save(filePath);
            }
            finally
            {
                xdoc = null;
            }
        }
        else
        {
            XmlDocument xdoc = new XmlDocument();
            try
            {
                xdoc.Load(filePath);
                XmlNodeList xnl = xdoc.GetElementsByTagName("Datas");
                XmlNode xn = xnl[0];

                XmlNode SettingNode = xn.FirstChild;
                int Counts = int.Parse(SettingNode.InnerText);
                Response.Write(Counts.ToString());
            }
            finally
            {
                xdoc = null;
            }
        }
    }
    else
        Response.Write("NOT");
}
</script>

counter.xml

<?xml version="1.0" encoding="utf-8"?>
<DataList>
  <Datas>
    <Count>0</Count>
  </Datas>
</DataList>