Question

I’m using an event PreviewKeyDown, and am adding the key in a list of key, as shown in the example below:

    List<Key> keys = new List<Key>();
    private void MDIChildBackground_PreviewKeyDown(object sender, KeyEventArgs e)
    {        

        keys.Add(e.Key);
    }

Then I wanted to take the keys from the list and convert to integer.

Example:

    int number=int.parse(keys[0].ToString());

ps: will only be typed numbers

But the problem is in converting to string
because when I type one (1) in keyboard and convert to string
the string value is “D1” and not “1”.
Soon, if I try to convert this string to integer, it will give exception.

Now, how can I handle this?

Answer 1

You could use the KeyInterop.VirtualKeyFromKey method to convert a WPF Key into a Win32 Virtual-Key. It will return the integer value of the pressed key.

For example, if you hit the T key it will return 84.