c# HttpWebRequest Cookie 设置到 webBrowser 控件

   [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern bool InternetSetCookie(string lpszUrlName, string lbszCookieName, string lpszCookieData);

        void Form3_Load(object sender, EventArgs e)
        {
             InternetSetCookie("http://localhost/1.asp",null,Common.cookie );
            // webBrowser1.Navigate("http://localhost/1.asp");
            webBrowser1.Navigate("http://localhost/1.asp");

        }

//get cookie from HttpWebRequest

  string s=  HttpHelper.httpGet("http://localhost/login.asp");
          string cookie= Common.cookie=  HttpHelper.myCookieContainer.GetCookieHeader(new Uri("http://localhost/"));
          MessageBox.Show(cookie);

 public static class HttpHelper
    {

        public static CookieContainer myCookieContainer = new CookieContainer();

        public static void initCookie()
        {
            myCookieContainer = new CookieContainer();
            string cookieStr = "accessID=20170817112826535103; tempID=4007780019; OnceLoginWEB=91919420; lastLoginDate=Thu%20Sep%2020%202018%2014%3A27%3A55%20GMT+0800%20%28China%20Standard%20Time%29; orderSource=10130301; NTKF_T2D_CLIENTID=guestFE5FC01D-72B3-4E96-7D6F-D08ACEE9E294; Hm_lvt_5caa30e0c191a1c525d4a6487bf45a9d=1537424876; Hm_lpvt_5caa30e0c191a1c525d4a6487bf45a9d=1537425679; Hm_lvt_8bcb99d7b6c2fba606d7089f6310d8bc=1537425835; Hm_lpvt_8bcb99d7b6c2fba606d7089f6310d8bc=1537427219; accessToken=baihe-1537427221699-e5a06bb78317b; _fmdata=9YMB%2BufU%2Fi4Gm2L72UeCAckBNQ5bzOuzmv9VtK7zki05zclzrqEhzWoPzAi7UJki9ekiKy4WxkI%2FWQ%2FuZlEqN9vHyrZ%2F9Nh5olgJUqhyjEY%3D";
            string[] cookstr = cookieStr.Split(";".ToCharArray());
            foreach (string str in cookstr)
            {
                string[] cookieNameValue = str.Split('=');
                Cookie ck = new Cookie(cookieNameValue[0].Trim().ToString(), cookieNameValue[1].Trim().ToString());
                ck.Domain = "localhost";//必须写对
                myCookieContainer.Add(ck);
            }

        }

        public static string httpGet(string url)
        {
            string s = "";
            try
            {
                HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
                req.CookieContainer = myCookieContainer;
                HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
               // Common.cookie = resp.Headers["Set-Cookie"];
                //MessageBox.Show(resp.Headers["Set-Cookie"]);
                myCookieContainer.Add(resp.Cookies);
                StreamReader r = new StreamReader(resp.GetResponseStream());
                s = r.ReadToEnd();
                r.Close();
                resp.Close();
                req.Abort();

            }
            catch (Exception ex)
            {

                s = ex.Message;

            }

            return s;
        }

        public static string httpPost(string url, string post)
        {
            string s = "";
            try
            {
                byte[] data = Encoding.ASCII.GetBytes(post);
                HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
                req.Method = "POST";
                req.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
                req.ContentLength = data.Length;
                req.GetRequestStream().Write(data, 0, data.Length);
                req.CookieContainer = myCookieContainer;
                HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
                myCookieContainer.Add(resp.Cookies);
                StreamReader r = new StreamReader(resp.GetResponseStream());
                s = r.ReadToEnd();
                r.Close();
                resp.Close();
                req.Abort();

            }
            catch (Exception ex)
            {

                s = ex.Message;

            }

            return s;
        }

    }