Get DataGridCell given row and column index

        private static DataGridCell GetCell(DataGrid grid, DataGridRow row, int column)
        {
            if (row != null)
            {
                var presenter = GetVisualChild<DataGridCellsPresenter>(row);

                if (presenter == null)
                {
                    grid.ScrollIntoView(row, grid.Columns[column]);
                    presenter = GetVisualChild<DataGridCellsPresenter>(row);
                }

                var cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
                return cell;
            }
            return null;
        }