[DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]        public static extern bool InternetSetCookie(string lpszUrlName, string lbszCookieName, string lpszCookieData);        private void button1_Click(object sender, EventArgs e)        {            var url = "http://n.eduyun.cn/index.php?r=portal/site/index";            InternetSetCookie(url, "Token", "value=HuangHaiWriting; expires=Thu, 01-Jan-2020 00:00:01 GMT");            System.Diagnostics.Process.Start("iexplore", url);            MessageBox.Show("ok!");        }