How to get IsKeyDown method to work in C#

Question

I can’t figure out how get this method to work:

System.Windows.Input.Keyboard.IsKeyDown(System.Windows.Input.Key)

The object browser says

Answer 1

Add PresentationCore.dll assembly as a reference.

Add WindowsBase.dll assembly as a reference.

Test code:

private void buttonMisc_Click(object sender, EventArgs e)
{
    if (System.Windows.Input.Keyboard.IsKeyDown(System.Windows.Input.Key.LeftShift) == true)
        MessageBox.Show("Got it!");
}