C# WinFrom（CS）程序调用 WEB 站点，获取响应内容

/// <summary>
     /// 调用RUL服务地址
     /// </summary>
     /// <param name="url"></param>
     /// <returns></returns>
     private string ServiceInvoke()
     {      string url =“​​http://www.***.com​​​”;  //你需要访问的 web 地址
       string result;
       System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(url);
       request.Timeout = 5000;
       System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
       System.IO.Stream rStream = response.GetResponseStream();
       System.IO.StreamReader sr = new System.IO.StreamReader(rStream, Encoding.UTF8); //如果内容乱码，试着修改 Encoding.UTF8 枚举
       StringBuilder strBuilder = new StringBuilder();
       strBuilder.Append(sr.ReadToEnd());      result = strBuilder.ToString();
      return result;
     }