asp.net中用C#实现站点计数器用户控件

资源：同级目录下的存放当前计数的count.txt文件子目录pic下的0到9的数字图片0.gif ~ 9.gif
--------------------------------
asax文件：
<%@ Control Language="c#" AutoEventWireup="false" Codebehind="counter.ascx.cs" Inherits="JiAnWeb.counter" TargetSchema="http://schemas.microsoft.com/intellisense/ie5"%>
<LINK href="css.css" rel="stylesheet">
<FONT face="宋体">
<TABLE id="table_counter" cellSpacing="0" cellPadding="0" width="750" align="center" border="0"
runat="server">
<TR>
<TD style="HEIGHT: 23px" align="center" valign=middle><IMG height="1" alt="" src="http://www.okasp.com/techinfo/pic/rightblueback.gif" width="700"></TD>
</TR>
<TR>
<TD align=center valign=middle></TD>
</TR>
</TABLE>
</FONT>
－－－－－－－－－－－－－－－－－－－
.cs文件：
namespace JiAnWeb
{
    using System;
    using System.Data;
    using System.Drawing;
    using System.Web;
    using System.Web.UI.WebControls;
    using System.Web.UI.HtmlControls;

    /// <summary>
    /// counter 的摘要说明。
    /// </summary>
    public class counter : System.Web.UI.UserControl
    {
        protected System.Web.UI.HtmlControls.HtmlTable table_counter;

        private void Page_Load(object sender, System.EventArgs e)
        {
            // 在此处放置用户代码以初始化页面
            string filePath=System.Web.HttpContext.Current.Server.MapPath("hits.txt");
            System.IO.StreamReader srReadLine = new System.IO.StreamReader(
            System.IO.File.OpenRead(filePath),
            System.Text.Encoding.ASCII);//Encoding.Default是读中文
            srReadLine.BaseStream.Seek(0, System.IO.SeekOrigin.Begin);//
            string countStr="";
            if (srReadLine.Peek() > -1)
            {
                countStr+=srReadLine.ReadLine();
            }
            int count=int.Parse(countStr)+1;
            countStr=count.ToString();
            srReadLine.Close();
            table_counter.Rows[1].Cells[0].InnerHtml="<font color=\"#009900\">";
            for (int i=0;i<countStr.Length;i++)
            {
                table_counter.Rows[1].Cells[0].InnerHtml=table_counter.Rows[1].Cells[0].InnerHtml+"<img         src=\"pic\\"+countStr.Substring(i,1)+".gif\">";
            }
            table_counter.Rows[1].Cells[0].InnerHtml+="</font>";

            // Write the string to a file.
            System.IO.StreamWriter file = new System.IO.StreamWriter(filePath);
            file.WriteLine(countStr,false);

            file.Close();
            srReadLine.Close();
        }

    #region Web 窗体设计器生成的代码
    override protected void OnInit(EventArgs e)
    {
        //
        // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
        //
        InitializeComponent();
        base.OnInit(e);
  }

    /// <summary>
    /// 设计器支持所需的方法 - 不要使用代码编辑器
    /// 修改此方法的内容。
    /// </summary>
    private void InitializeComponent()
    {
        this.Load += new System.EventHandler(this.Page_Load);

    }
   #endregion
 }
}

                                                           
                                                            【注：本文由控件中国网转载】