c# WebBrowser获取cookie

         private void BtnOpenUrl_Click(object sender, EventArgs e)
         {
             if (txtUrl.Text != "")
             {
                 MywebBrowser.Url = new Uri(txtUrl.Text);
             }
         }
 
         private void BtnGetCookie_Click(object sender, EventArgs e)
         {
             CookieContainer myCookieContainer = new CookieContainer();
             if (MywebBrowser.Document.Cookie != null)
             {
                 string cookieStr = MywebBrowser.Document.Cookie;
                 string[] cookstr = cookieStr.Split(';');
                 foreach (string str in cookstr)
                 {
                     string[] cookieNameValue = str.Split('=');
                     Cookie ck = new Cookie(cookieNameValue[].Trim().ToString(), cookieNameValue[].Trim().ToString());
                     ck.Domain = "www.google.com";
                     myCookieContainer.Add(ck);
                 }
             }
         }