Track key press and key release on WPF applications

Question

Is there a way to track key press and release actions on WPF?

This is what I've tried so far, but what I'm finding is that the _upDownKeyIsPressed is only set to false if I press another key - not when the up or down key is released

    private void KeyUpPress(KeyEventArgs e)
    {
        if (e.Key == Key.Up || e.Key == Key.Down)
        {
            _upDownKeyIsPressed = true;
            Console.WriteLine(_upDownKeyIsPressed.ToString());
        }
    }

    private void KeyDownPress(KeyEventArgs e)
    {
        if (e.Key == Key.Up || e.Key == Key.Down)
        {
            _upDownKeyIsPressed = false;
            Console.WriteLine(_upDownKeyIsPressed.ToString());
        }
    }

    private void PlotListView_KeyUp(object sender, KeyEventArgs e)
    {
        KeyUpPress(e);
    }

    private void PlotListView_KeyDown(object sender, KeyEventArgs e)
    {
        KeyDownPress(e);
    }

Maybe you should put it to `true` on KeyDown and to `false` on KeyUp. — aloisdg, Jan 25 '15 at 18:14

score 1 · Accepted Answer · edited May 23 '17 at 12:28

If you want to try what I said in comment. I think about something like this :

    private void PlotListView_KeyUp(object sender, KeyEventArgs e)
    {
        TrackUpDownKeyPress(e, false);
    }

    private void PlotListView_KeyDown(object sender, KeyEventArgs e)
    {
        TrackUpDownKeyPress(e, true);
    }

    private void TrackUpDownKeyPress(KeyEventArgs e, bool isPressed)
    {
        if (e.Key == Key.Up || e.Key == Key.Down)
            _upDownKeyIsPressed = isPressed;
    }

If you want more info about the difference between keyUp and keyDown, check this question.

Track key press and key release on WPF applications

1 Answers1