AvalonStudio.Controls.KeyExtensions.IsModifierKey C# (CSharp) Method

        public static bool IsModifierKey(this Key key)
        {
            bool result = false;

            switch (key)
            {
                case Key.LeftShift:
                case Key.LeftAlt:
                case Key.LeftCtrl:
                case Key.RightAlt:
                case Key.RightCtrl:
                case Key.RightShift:
                    result = true;
                    break;
            }

            return result;
        }