Set the focus on a textbox in xaml wpf

Question

Despite some posts on this forum and others i cannot find something that tells me how to set the focus on a TextBox.

I have a userControl with many labe

Answer 1

I have a TextBox inside a Grid inside a DataTemplate which I want to have keyboard focus when it becomes visible. I also found that

did not work for me.

However when I call Focus() in the parent ContentControl

private void ContentControl_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
{
    if ((sender as ContentControl).IsVisible)
    {
        (sender as ContentControl).Focus();
    }
}

it starts to work and the caret is visible in the TextBox. I think the FocusScope has to be given focus for the FocusManager.FocusedElement property to have any effect.

Jerry