C#获得cookie的值

//得到cookie值的方法

[STAThread]    

public static string RemoteLogin(string strLoginUrl, string strPostData, string cookieName)    

{        

  CookieContainer cContainer=new CookieContainer();        

  byte[] data = System.Text.Encoding.ASCII.GetBytes(strPostData);        

  string bResult = "";

      HttpWebRequest myreq = (HttpWebRequest)WebRequest.Create(strLoginUrl);        

  myreq.Referer = strLoginUrl;        

  myreq.Method = "POST";        

  myreq.KeepAlive = true;        

  myreq.AllowAutoRedirect = false;        

  myreq.ContentLength = data.Length;        

   //cookieContainer = new CookieContainer();        

  myreq.CookieContainer = cContainer;        

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

        //这个在Post的时候,一定要加上,如果服务器返回错误,他还会继续再去请求,不会使用之前的错误数据,做返回数据                          

    myreq.ServicePoint.Expect100Continue = false;        

  HttpRequestCachePolicy noCachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore);                             myreq.CachePolicy = noCachePolicy;

       try        

    {            

      Stream newStream = myreq.GetRequestStream();            

      newStream.Write(data, 0, data.Length);            

      newStream.Close();

              HttpWebResponse myres = (HttpWebResponse)myreq.GetResponse();            

      StreamReader stream;            

      Encoding encoding;            

      if (!string.IsNullOrEmpty(myres.CharacterSet))            

      {                

        encoding = Encoding.GetEncoding(myres.CharacterSet);            

      }            

      else            

      {                

        encoding = Encoding.Default;            

      }            

      stream = new StreamReader(myres.GetResponseStream(), encoding);            

      string strHtml = stream.ReadToEnd();            

      //LogCommon.ilogDebug.Debug(strHtml);                

      if (myres.Cookies[cookieName] != null && !string.IsNullOrEmpty(myres.Cookies[cookieName].Value))                                            {                    

        bResult = myres.Cookies[cookieName].Value;                

      }

                if (myreq != null)  myreq.Abort();            

         myres.Close();        

      }        

    catch (Exception ex)        

    {             throw ex;         }        

     return bResult;    

}

//调用

RemoteLogin(请求的url,请求需要的参数,cookie的key);

原文地址:https://www.cnblogs.com/eryang/p/2659057.html