How can I catch both single-click and double-click events on WPF FrameworkElement?

Question

I can catch a single-click on a TextBlock like this:

private void TextBlock_MouseDown(object sender, MouseButtonEventArgs e)
{
    MessageBo         


        

Answer 1

My issue was with single/double-clicking rows in a DataGrid in WPF. For some reason the ButtonDown events weren't firing, only the OnMouseLeftButtonUp event was. Anyway, I wanted to handle the single-click differently from the double-click. It looks me a little time (I'm sure the solution isn't perfect, but it appears to work) to distill the problem down until I got it down to the below. I created a Task which calls an Action and that Action's target can be updated by a second click. Hope this helps someone!

private Action _clickAction;
private int _clickCount;

private void Grid_OnMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
    Debug.WriteLine("Button Click Occurred");

    _clickCount++;

    if (_clickCount == 1)
    {
        _clickAction = SingleClick;
    }

    if (_clickCount > 1)
    {
        _clickAction = DoubleClick;
    }

    if (_clickCount == 1)
    {
        Task.Delay(200)
            .ContinueWith(t => _clickAction(), TaskScheduler.FromCurrentSynchronizationContext())
            .ContinueWith(t => { _clickCount = 0; });
    }
}

private void DoubleGridClick()
{
    Debug.WriteLine("Double Click");
}

private void SingleGridClick()
{
    Debug.WriteLine("Single Click");
}