AGS.Editor.CustomResolutionDialog.EnableCustomItem C# (CSharp) Метод

        private void EnableCustomItem(bool enable)
        {
            if (enable)
            {
                if (_customItemIndex < 0)
                    _customItemIndex = cbResolutionPreset.Items.Add("Custom resolution");
            }
            else
            {
                if (_customItemIndex >= 0)
                {
                    cbResolutionPreset.Items.RemoveAt(_customItemIndex);
                    _customItemIndex = -1;
                }
            }
        }