LayoutFarm.UI.GridCell.GetNeighborGrid C# (CSharp) Method

        public GridCell GetNeighborGrid(CellNeighbor nb)
        {
            switch (nb)
            {
                case CellNeighbor.Left:
                    {
                        GridColumn prevColumn = column.PrevColumn;
                        if (prevColumn != null)
                        {
                            return prevColumn.GetCell(row.RowIndex);
                        }
                        else
                        {
                            return null;
                        }
                    }
                case CellNeighbor.Right:
                    {
                        GridColumn nextColumn = column.NextColumn;
                        if (nextColumn != null)
                        {
                            return nextColumn.GetCell(row.RowIndex);
                        }
                        else
                        {
                            return null;
                        }
                    }
                case CellNeighbor.Up:
                    {
                        if (row.RowIndex > 0)
                        {
                            return column.GetCell(row.RowIndex - 1);
                        }
                        else
                        {
                            return null;
                        }
                    }
                case CellNeighbor.Down:
                    {
                        if (row.RowIndex < row.OwnerGridRowCount - 1)
                        {
                            return column.GetCell(row.RowIndex + 1);
                        }
                        else
                        {
                            return null;
                        }
                    }
                default:
                    {
#if DEBUG
                        throw new NotSupportedException();
#else
                            return null;
#endif
                    }
            }
        }