set value on textbox web

with id
Webbrowser.Document.getElementById("user").setAttribute("value", "username")



without id
Webbrowser.Document.getElementByTagName("input").getElementByName("user").item(0).setAttribute("value", "username")





example




   Try
            MainForm.WebBrowser1.ScriptErrorsSuppressed = True

            While MainForm.WebBrowser1.ReadyState <> WebBrowserReadyState.Complete
                Application.DoEvents()
            End While

            MainForm.WebBrowser1.Document.GetElementsByTagName("input").GetElementsByName("email").Item(0).SetAttribute("value", UName)



            MainForm.WebBrowser1.Document.GetElementsByTagName("input").GetElementsByName("password").Item(0).SetAttribute("value", Upassword)






            Dim allelements As HtmlElementCollection = MainForm.WebBrowser1.Document.All
            For Each webpageelement As HtmlElement In allelements
                If webpageelement.InnerText = "Login" Then

                    webpageelement.InvokeMember("click")
                End If
            Next



        Catch ex As Exception
            MsgBox(ex.StackTrace)
        End Try