WinRTXamlToolkit.Controls.Calendar.ProcessCalendarKey C# (CSharp) Method

        internal bool ProcessCalendarKey(KeyRoutedEventArgs e)
        {
            if (DisplayMode == CalendarMode.Month)
            {
                if (LastSelectedDate.HasValue && DisplayDateInternal != null)
                {
                    // If a blackout day is inactive, when clicked on it, the
                    // previous inactive day which is not a blackout day can get
                    // the focus.  In this case we should allow keyboard
                    // functions on that inactive day
                    if (DateTimeHelper.CompareYearMonth(LastSelectedDate.Value, DisplayDateInternal) != 0 && FocusButton != null && !FocusButton.IsInactive)
                    {
                        return true;
                    }
                }
            }

            // Some keys (e.g. Left/Right) need to be translated in RightToLeft mode
            VirtualKey invariantKey = InteractionHelper.GetLogicalKey(FlowDirection, e.Key);
            
            bool ctrl, shift;
            CalendarExtensions.GetMetaKeyState(out ctrl, out shift);

            switch (invariantKey)
            {
                case VirtualKey.Up:
                    {
                        ProcessUpKey(ctrl, shift);
                        return true;
                    }
                case VirtualKey.Down:
                    {
                        ProcessDownKey(ctrl, shift);
                        return true;
                    }
                case VirtualKey.Left:
                    {
                        ProcessLeftKey(shift);
                        return true;
                    }
                case VirtualKey.Right:
                    {
                        ProcessRightKey(shift);
                        return true;
                    }
                case VirtualKey.PageDown:
                    {
                        ProcessPageDownKey(shift);
                        return true;
                    }
                case VirtualKey.PageUp:
                    {
                        ProcessPageUpKey(shift);
                        return true;
                    }
                case VirtualKey.Home:
                    {
                        ProcessHomeKey(shift);
                        return true;
                    }
                case VirtualKey.End:
                    {
                        ProcessEndKey(shift);
                        return true;
                    }
                case VirtualKey.Enter:
                case VirtualKey.Space:
                    {
                        return ProcessEnterKey();
                    }
            }
            return false;
        }