private void btnApply_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(selectedCategory) || selectedCommand == null || selectedCommand.KeyData == tbHotkey.KeyData)
            {
                return;
            }

            selectedCommand.KeyData = tbHotkey.KeyData;
            HotkeySettingsManager.Update(selectedCategory, selectedCommand);
            UpdateCommandView(selectedCategory);
        }
        private void btnRemove_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(selectedCategory) || selectedCommand == null || selectedCommand.KeyData == Keys.None)
            {
                return;
            }

            selectedCommand.KeyData = Keys.None;
            HotkeySettingsManager.Update(selectedCategory, selectedCommand);
            tbHotkey.SetKeydata(selectedCategory, selectedCommand);
            UpdateCommandView(selectedCategory);
        }