public virtual UIView ViewForCell(FrozenHeadersGridView gridView, Point cell) { return null; }
public virtual string TitleForColumn(FrozenHeadersGridView gridView, int column) { return string.Empty; }
public virtual string TitleForRow(FrozenHeadersGridView gridView, int row) { return string.Empty; }
public virtual int NumberOfRows(FrozenHeadersGridView gridView) { return 0; }