static ColumnManagerCell()
        {
            FocusableProperty.OverrideMetadata(typeof(ColumnManagerCell), new FrameworkPropertyMetadata(false));
            ReadOnlyProperty.OverrideMetadata(typeof(ColumnManagerCell), new FrameworkPropertyMetadata(true));

            ColumnManagerCell.IsPressedProperty = ColumnManagerCell.IsPressedPropertyKey.DependencyProperty;

            ColumnManagerCell.IsBeingDraggedProperty = ColumnManagerCell.IsBeingDraggedPropertyKey.DependencyProperty;
        }