How to determine if button was clicked or touched?

Question

Is there a way to distinguish whether a button was clicked as in with a mouse or touched using a touchscreen in WPF?

Answer 1

You can subscribe to PreviewMouseDown and PreviewTouchDown.

Page.xaml

<Button PreviewMouseDown="Button_PreviewMouseDown"
        PreviewTouchDown="Button_PreviewTouchDown" />

Page.xaml.cs

    private void Button_PreviewMouseDown(object sender, MouseButtonEventArgs e)
    {
        MessageBox.Show("Mouse was used.");
    }

    private void Button_PreviewTouchDown(object sender, TouchEventArgs e)
    {
        MessageBox.Show("Touchscreen was used.");
    }

I don't believe you'll be able to access the eventargs of either in the actual click event.

If you need to perform work there as opposed to the preview events I would recommend setting an instance variable in the preview events so when you get to the click event you know where you came from.