Hi All

I created form in WPF application. That form has some TextBox field. When I enter unique number in TextBox1 and that number exists in database rest TextBox fields received according binding data for those fields when I click Tab button. I would like to stop cursor on TextBox2 if field doesn't get data and skip Teif it get data 0. Look is very simple but I cannot figure out why it doesn't work in my case.
Code:
Private Sub TextBox1_LostFocus(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles TextBox1.LostFocus
        If cvTest.Count > 0 Then
            If Me.TextBox2.Text = ""
                 Me.TextBox2.IsTabStop = True
            Else
                 Me.TextBox2.IsTabStop = False
        End If
End Sub
where cvTest collection view. When I press Tab key when cursor in TextBox1, the cursor stop in TextBox2 in any cases. Why? How to fix that simple problem?

Thanks.