Private Sub txtAnswer_Validating(sender As Object, e As System.ComponentModel.CancelEventArgs) Handles txtAnswer.Validating

If txtAnswer.Text = "t" Or txtAnswer.Text = "f" Then

SaveQA()

Else

e.Cancel = True

MsgBox("Please type either t or f as the answer. Then press Tab again.")

txtAnswer.Text = ""

End If

End Sub