Permanent focus on a field - WPF

Question

I have an application with several fields, but I would like to leave the focus only on one specific and not allow the withdrawal of the same in any situation. Force the focus always in this field, and if the user tries to withdraw, it blocks and does not allow this action. Possible that task? Working with a Textedit field from Devexpress, similar to Textbox.

Hug!

Answer 1

You can use the event LostFocus textbox.

private void textBox1_LostFocus(object sender, EventArgs e)
{
    this.ActiveControl = textBox1;
}

Note that I used the name textBox1 only as an example.

Answer 2

Using the function PreviewLostKeyBoardFocus textedit.

private void textNome_PreviewLostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
    if (e.NewFocus != null && !LayoutHelper.IsChildElementEx((DependencyObject)sender, (DependencyObject)e.NewFocus))
    {
        textNome.Focus();
        Keyboard.Focus(textNome);
        e.Handled = true;
    }
}