How to press a login button of a website programmatically

Question

I am loading a website into a WebBrowser in a winform. I wish to login using a log and pass automatically via vb.net

I have the following code executing onc

Answer 1

I applied this logic:

• Put the code in a DocumentCompleted event to run the code after the document completed.
• The DocumentCompleted also raises when an iframe document completed, so to get rid of iframes use a criteria like comparing e.Url with the base url know.
• Find the submit button by name and click on it.

And it worked properly. It redirected to the same url and showed a red not authenticated message.

Code:

Private Sub WebBrowser1_DocumentCompleted(sender As Object, e As WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
    If (e.Url.ToString().StartsWith("https://www.weatherzone.com.au")) Then
        WebBrowser1.Document.GetElementById("e").SetAttribute("value", "email@address.com")
        WebBrowser1.Document.GetElementById("p").SetAttribute("value", "password")
        WebBrowser1.Document.All().GetElementsByName("target").Cast(Of HtmlElement).First().InvokeMember("click")
    End If
End Sub

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    Me.WebBrowser1.Navigate("https://www.weatherzone.com.au/customise.jsp")
End Sub

To make the code more stable, add required null checkings.