ASP.NET(C#)经典采集代码

为大家提供一个ASP.NET中用C#实现的采集代码:

    using System;
    using System.Data;
    using System.Configuration;
    using System.Web;
    using System.Web.Security;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.WebControls.WebParts;
    using System.Web.UI.HtmlControls;
    using System.Drawing;
    using MSXML2;
    using System.Text.RegularExpressions;
    namespace wenweifeng
    {
        /**//// <summary>
        /// CaiJi 的摘要说明
        /// </summary>
        public class CaiJi
        {
            public CaiJi()
            {
                //
                // TODO: 在此处添加构造函数逻辑
                //
            }
            ~CaiJi()
            {
                Dispose();
            }
            public void Dispose()
            {
             GC.SuppressFinalize(this);
            }

         日期随机函数#region 日期随机函数
            /**//**********************************
             * 函数名称:DateRndName
             * 功能说明:日期随机函数
             * 参    数:ra:随机数
             * 调用示例:
             *          GetRemoteObj o = new GetRemoteObj();
             *          Random ra = new Random();

    *          string s = o.DateRndName(ra);
             *          Response.Write(s);
             *          o.Dispose();
             * ********************************/
            /**//// <summary>
            /// 日期随机函数
            /// </summary>
            /// <param name="ra">随机数</param>
            /// <returns></returns>
            public  string DateRndName(Random ra)
            {
                DateTime d = DateTime.Now;
                string s = null, y, m, dd, h, mm, ss;
                y = d.Year.ToString();
                m = d.Month.ToString();
                if (m.Length < 2) m = "0" + m;
                dd = d.Day.ToString();
                if (dd.Length < 2) dd = "0" + dd;
                h = d.Hour.ToString();
                if (h.Length < 2) h = "0" + h;
                mm = d.Minute.ToString();
                if (mm.Length < 2) mm = "0" + mm;
                ss = d.Second.ToString();
             if (ss.Length < 2) ss = "0" + ss;
                s += y + ’,’ + m + ’,’ + dd + ’,’ + h + "-" + mm + "-" + ss;
                s += ra.Next(1000000, 9999999).ToString();
                return s;
            }
            #endregion

            取得文件后缀#region 取得文件后缀
            /**//**********************************
             * 函数名称:GetFileExtends
             * 功能说明:取得文件后缀
             * 参    数:filename:文件名称
             * 调用示例:
             *          GetRemoteObj o = new GetRemoteObj();
             *          string url = @"             *          string s = o.GetFileExtends(url);
             *          Response.Write(s);
             *          o.Dispose();
             * ********************************/
            /**//// <summary>
            /// 取得文件后缀
            /// </summary>
            /// <param name="filename">文件名称</param>
            /// <returns></returns>

            public string GetFileExtends(string filename)
            {
                string ext = null;
                if (filename.IndexOf(’.’) > 0)
                {
                    string[] fs = filename.Split(’.’);
                    ext = fs[fs.Length - 1];
                }
                return ext;
            }
            #endregion

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