Question

I’ve got a user control, consisting of a text box and two buttons.
the control is placed on a dialog box and when i tab over the dialog
controls, I experience proper behavior – first the text box is focused,
then one button, then the other.
However, when I set the user control as a target of a keyboard shortcut
set with “_” for a label (say press alt+r for “_Row count”) the user control
does not receive any focus. Tried implementing “gotkeyboardfocus” and setting
the focus to the textbox control there but it doesn’t work.

Answer 1

A UserControl isn’t focusable by default so you have to turn it on in order to get this to work.

<my:UserControl1 x:Name="userControl11" Focusable="True" .../>
<Label Target="userControl11">_Row count</Label>

And then you can focus the desired TextBox inside of the UserControl when it recieves Focus

private void UserControl_GotFocus(object sender, RoutedEventArgs e)
{
    textBox.Focus();
}