I want to make a login for my application, not using a database, for now.

I figured something like this:

Code:
Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click

        If UsernameTextBox.Text = "Josh" & PasswordTextBox.Text = "mypass1" Then
            Me.Hide()
        Else If
            MsgBox("Sorry User Name Or Passord Is Incorrect")
        End If

    End Sub
Im getting a cannot convert to boolean or something.

Please help, very new to this. Some Java experience