#650 – Getting Information About Keyboard Keys from Any Method

You can use the KeyEventArgs.KeyboardDevice property within a keypress handler to get information about any keyboard key.  For example:

private void TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
{
    Console.WriteLine(string.Format("Toggle info: Caps Lock:{0}, Scroll Lock: {1}, Num Lock: {2}",
        e.KeyboardDevice.IsKeyToggled(Key.CapsLock),
        e.KeyboardDevice.IsKeyToggled(Key.Scroll),
        e.KeyboardDevice.IsKeyToggled(Key.NumLock)));
}

You can also access the same KeyboardDevice object from any method, using the Keyboard.PrimaryDevice property (found in System.Windows.Input). This property will refer to an instance of a KeyboardDevice object.

        public void MyFunctionToGetKeyInfo()
        {
            Console.WriteLine(string.Format("Toggle info: Caps Lock:{0}, Scroll Lock: {1}, Num Lock: {2}",
                Keyboard.PrimaryDevice.IsKeyToggled(Key.CapsLock),
                Keyboard.PrimaryDevice.IsKeyToggled(Key.Scroll),
                Keyboard.PrimaryDevice.IsKeyToggled(Key.NumLock)));
        }

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

One Response to #650 – Getting Information About Keyboard Keys from Any Method

  1. Pingback: Dew Drop – September 19, 2012 (#1,404) | Alvin Ashcraft's Morning Dew

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