IsTabStop = False on a SL4 Text box

Question

I set IsTabStop to false on a text box and I know that this makes the control unable to receive focus, but according to the Silverlight Forums, it should still be able to receive mouse events. I have the MouseLeftButtonUp event wired and a breakpoint in my tbxTotal_MouseLeftButtonUp method, and it never gets hit during debugging. The thread in the SL Forums is pretty old now, so maybe this was changed in an update somewhere. I want a text box that can't be tabbed to, but is still editable. Should it really be this hard?

Answer 1

I didn't realize this, but it seems to be the case, Additionally, I can't seem to get MouseLeftButtonUp to fire. MouseLeftButtonDown does fire though and using that you can do this hack.

<TextBox IsTabStop="False" MouseLeftButtonDown="TextBox_MouseLeftButtonDown" />

Then in code you can handle the event like this.

    private void TextBox_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        var textBox = ((TextBox) sender);
        textBox.IsTabStop = true;
        textBox.Focus();
        textBox.IsTabStop = false;
    }

It might be worth while to wrap it in a CustomControl

public class FocusableTextBox : TextBox
{
    protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
    {
        if (!IsTabStop)
        {
            IsTabStop = true;
            Focus();
            IsTabStop = false;
        }

        base.OnMouseLeftButtonDown(e);
    }
}