Subtitle Edit: Keydown handler with dictionary

        private readonly IReadOnlyDictionary<Keys, Action<ListViewItem>> _keyCombination = new Dictionary<Keys, Action<ListViewItem>>()
        {
            { Keys.A | Keys.Control, item => { item.Checked = true; item.Selected = true; } },
            { Keys.D | Keys.Control, item => { item.Checked = false; item.Selected = false; } },
            { Keys.I | Keys.Control | Keys.Shift, item => { item.Checked = !item.Checked; item.Selected = !item.Selected; } },
        };

        private void listView1_KeyDown(object sender, KeyEventArgs e)
        {
            if (!_keyCombination.TryGetValue(e.KeyData, out var handler))
            {
                return;
            }

            foreach (ListViewItem item in listView1.Items)
            {
                handler.Invoke(item);
            }

            e.SuppressKeyPress = true;
        }

FixCommonError.cs:private void listView1_KeyDown(object sender, KeyEventArgs e)
https://github.com/SubtitleEdit/subtitleedit/blob/7008be78ab6fbe9e1c58cb6501854f555b6df35f/src/libse/Forms/FixCommonErrors/FixContinuationStyle.cs