VB.NET - Logging into a website through vb

Hi i've been trying to login into reddit at the click of a button. I've managed to fill the fields but I can't work out how to make it submit. Can anyone help?

This is what I have:-

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        Dim username As String
        Dim password As String
        username = "username"
        password = "password"

        WebBrowser1.Document.GetElementById("user_login").SetAttribute("Value", username)
        WebBrowser1.Document.GetElementById("passwd_login").SetAttribute("Value", password)

        Dim theElementCollection As HtmlElementCollection = Me.WebBrowser1.Document.GetElementsByTagName("input")

        For Each curElement As HtmlElement In theElementCollection
            If curElement.GetAttribute("value").Equals("Login") Then
                curElement.InvokeMember("click")
            End If
        Next

    End Sub

Code (markup):

Thanks for any help!

 

I think you're supposed to invoke "submit" not "click."