C#读取网页源码

 　　　　#region 1.读取 网页源码 +  static string ReadHtml(string urlStr,int type)
         /// <summary>
         /// 读取 网页源码 +  static string ReadHtml(string urlStr,int type)
         /// </summary>
         /// <param name="urlStr">网址</param>
         /// <param name="type">网页编码 0:utf8,1:gbk,2:gb2312</param>
         /// <returns>返回源码</returns>
         public static string ReadHtml(string urlStr,int type)
         {
             WebClient wc = new WebClient();
             string tempStr=string.Empty;
             switch (type)
             {
                 case :
                     //tempStr = Encoding.UTF8.GetString(wc.DownloadData(string.Format(urlStr)));
                     tempStr = Encoding.GetEncoding("utf-8").GetString(wc.DownloadData(string.Format(urlStr)));
                     break;
                 case :
                     //tempStr = Encoding.Default.GetString(wc.DownloadData(string.Format(urlStr)));
                     tempStr = Encoding.GetEncoding("gbk").GetString(wc.DownloadData(string.Format(urlStr)));
                     break;
                 case :
                     //tempStr = Encoding.Default.GetString(wc.DownloadData(string.Format(urlStr)));
                     tempStr = Encoding.GetEncoding("gb2312").GetString(wc.DownloadData(string.Format(urlStr)));
                     break;
                 default:
                     break;
             }
             return tempStr;
         }
         #endregion

需要引用 using System.Net;