#region 获取字符流

        /// <summary>

        /// 获取字符流

        /// </summary>

        //---------------------------------------------------------------------------------------------------------------

        // 示例:

        // System.Net.CookieContainer cookie = new System.Net.CookieContainer(); 

        // Stream s = HttpHelper.GetStream("http://ptlogin2.qq.com/getimage?aid=15000102&0.43878429697395826", cookie);

        // picVerify.Image = Image.FromStream(s);

        //---------------------------------------------------------------------------------------------------------------

        /// <param name="url">地址</param>

        /// <param name="cookieContainer">cookieContainer</param>

        public static Stream GetStream(string url, CookieContainer cookieContainer)

        {

            currentTry++;



            HttpWebRequest httpWebRequest = null;

            HttpWebResponse httpWebResponse = null;



            try

            {

                httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);

                httpWebRequest.CookieContainer = cookieContainer;

                httpWebRequest.ContentType = contentType;

                httpWebRequest.ServicePoint.ConnectionLimit = maxTry;

                httpWebRequest.Referer = url;

                httpWebRequest.Accept = accept;

                httpWebRequest.UserAgent = userAgent;

                httpWebRequest.Method = "GET";



                httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();

                Stream responseStream = httpWebResponse.GetResponseStream();

                currentTry--;

                return responseStream;

            }

            catch (Exception e)

            {

                if (currentTry <= maxTry)

                {

                    GetHtml(url, cookieContainer);

                }



                currentTry--;



                if (httpWebRequest != null)

                {

                    httpWebRequest.Abort();

                } if (httpWebResponse != null)

                {

                    httpWebResponse.Close();

                }

                return null;

            }

        }

        #endregion