C# 发送 get请求 得到页面内容

最近要用C# 发送HTTP 请求到一个地址  然后读取页面内容  精简代码如下 :

get 请求

 public static string GetUrltoHtml(string Url, string type)
        {

            try
            {

                System.Net.WebRequest wReq = System.Net.WebRequest.Create(Url);

                // Get the response instance.

                System.Net.WebResponse wResp = wReq.GetResponse();

                System.IO.Stream respStream = wResp.GetResponseStream();

                // Dim reader As StreamReader = New StreamReader(respStream)

                using (System.IO.StreamReader reader = new System.IO.StreamReader(respStream, Encoding.GetEncoding(type)))
                {
                    return reader.ReadToEnd();
                }
            }
            catch (System.Exception ex)
            {

                //errorMsg = ex.Message;

            }
            return "";
        }

post

        public static string OpenReadWithHttps(string URL, string strPostdata, string strEncoding)
        {

            Encoding encoding = Encoding.Default;

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);

            request.Method = "post";

            request.Accept = "text/html, application/xhtml+xml, */*";

            request.ContentType = "application/x-www-form-urlencoded";

            //byte[] buffer = encoding.GetBytes(strPostdata);

            //request.ContentLength = buffer.Length;

            //request.GetRequestStream().Write(buffer, 0, buffer.Length);

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            using (StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.GetEncoding(strEncoding)))
            {
                return reader.ReadToEnd();
            }
        }