class Program
    {
        static void Main(string[] args)
        {
            string strUrl = "https://www.baidu.com";
            HttpWebRequest wreq = (HttpWebRequest)WebRequest.Create(strUrl);
            HttpWebResponse wrsp = (HttpWebResponse)wreq.GetResponse();
            if (wrsp.StatusCode == HttpStatusCode.OK)
            {
                Console.WriteLine(strUrl+ "   --http response正常\r\n"); 
            }
            else
            {
                Console.WriteLine(strUrl + "   --http response出现异常！\r\n"); 
            }
            Console.ReadKey();
        }
    }