Get lowercase with keydown wpf

Question

I want to get the keys pressed on the keyboard either with or without caplock:

private void Window_KeyDown(object sender, System.Windows.Input.KeyEventArgs e         


        

Answer 1

The best way to handle this is by using Window_TextInput event rather than KeyDown.

But as you said this event does not fire on your application you can rather use a hack like this :

bool iscapsLock = false;
bool isShift = false;
private void Window_KeyDown(object sender, KeyEventArgs e)
{
    if (e.Key == Key.CapsLock)
        iscapsLock = !iscapsLock;

    if (e.Key >= Key.A && e.Key <= Key.Z)
    {
        bool shift = isShift;
        if (iscapsLock)
            shift = !shift;
        int s = e.Key.ToString()[0];
        if (!shift)
        {
            s += 32;
        }
        Debug.Write((char)s);
    }

}

This will properly print the characters based on whether capslock is turned on or not. The initial value of the Capslock can be retrieved using this link :

http://cboard.cprogramming.com/csharp-programming/105103-how-detect-capslock-csharp.html

I hope this works for you.