private void webBrowserMG_Navigated(object sender, WebBrowserNavigatedEventArgs e) { WebRequest wr = WebRequest.Create(this.webBrowserMG.Url); wr.Method = "POST"; byte[] bytes = Encoding.ASCII.GetBytes("param1=1¶m2-2"); Stream os = null; try { // envoyer le POST wr.ContentLength = bytes.Length; //Compter les bytes à envoyer os = wr.GetRequestStream(); os.Write(bytes, 0, bytes.Length); //l'envoie des parametres } catch (WebException ex) { MessageBox.Show(ex.Message); } finally { if (os != null) { os.Close(); } } }