解決iis7.5服務器上.net 獲取不到https頁面的信息

    我的獲取頁面需要cookie，不需要的可以去掉；
    GET的方法：
    代碼如下:
    /// <summary>
            /// 獲取URL訪問的HTML內容 獲取https 頁面的
            /// </summary>
            /// <param name="Url">URL地址</param>
            /// <returns>HTML內容</returns>
            public static string GetWebContent(string Url, CookieContainer cookieContainer)
            {
                string strResult = "";
                try
                {
                    ServicePointManager.Expect100Continue = true;
                    ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;
                    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
                    request.CookieContainer = cookieContainer;
                    request.Timeout = 30000;
                    request.Headers.Set("Pragma", "no-cache");
                    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                    Stream streamReceive = response.GetResponseStream();
                    Encoding encoding = Encoding.GetEncoding("utf-8");
                    StreamReader streamReader = new StreamReader(streamReceive, encoding);
                    strResult = streamReader.ReadToEnd();
                }
                catch
                {
                }
                return strResult;
            }
     POST的方法：
    代碼如下:
    /// <summary>
            /// post提交數據到https
            /// </summary>
            /// <param name="posturl"></param>
            /// <param name="postdata"></param>
            /// <param name="header"></param>
            /// <param name="cookieContainer"></param>
            /// <returns></returns>
            public static string SetPostHtml(string posturl, string postdata, HttpHeader header, CookieContainer cookieContainer)
            {
                string restr = "";
                ServicePointManager.Expect100Continue = true;
                ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;
                HttpWebRequest request = null;
                HttpWebResponse response = null;
                request = (HttpWebRequest)WebRequest.Create(posturl);
                request.CookieContainer = cookieContainer;
                request.Method = header.method;
                request.Referer = header.Referer;
                request.ContentType = header.contentType;
                byte[] postdatabyte = Encoding.UTF8.GetBytes(postdata);
                request.ContentLength = postdatabyte.Length;
                request.AllowAutoRedirect = false;
                request.KeepAlive = true;
                //提交請求
                Stream stream;
                stream = request.GetRequestStream();
                stream.Write(postdatabyte, 0, postdatabyte.Length);
                stream.Close();
                //接收響應
                response = (HttpWebResponse)request.GetResponse();
                using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                {
                    restr = reader.ReadToEnd().ToString();
                }
                return restr;
            }