message after login

Question

hi everybody i work with windows form web browers control i want to show message of sucess login or fail after passing info to web page 

 

private void btnlog_Click(object sender, EventArgs e)
      {
          if (webBrowserlogin.Url.PathAndQuery == ("/bbbb/login.aspx"))
          {

              HtmlElement ele = webBrowserlogin.Document.GetElementById("TextBox1");
              if (ele != null)
                  ele.InnerText = txt1.Text.Trim();

              ele = webBrowserlogin.Document.GetElementById("TextBox2");
              if (ele != null)
                  ele.InnerText = txt2.Text.Trim();

              ele = webBrowserlogin.Document.GetElementById("TextBox3");
              if (ele != null)
                  ele.InnerText = txt3.Text.Trim();


              var theElementCollectionChildNext = webBrowserlogin.Document.GetElementsByTagName("input");
              foreach (HtmlElement elChild in theElementCollectionChildNext)
              {
                  if (elChild.Id == "Button5")
                  {
                      elChild.InvokeMember("click");
                      break;
                  }
              }

          }


      }