public override IExcelCellHolder GetOrCreateCell(ExcelColumnIndex columnIndex, int rowIndex, bool centrized) { int columnIndexInt = columnIndex.AsInt32().UseOneBasedIndexing(); columnIndexInt.ThrowIfValueIsOutOfRange(nameof(columnIndex), 1, int.MaxValue); rowIndex.ThrowIfValueIsOutOfRange(nameof(rowIndex), 1, int.MaxValue); ExcelRange excelRange = _sheet.Cells[rowIndex, columnIndexInt]; excelRange = centrized ? excelRange.Center() : excelRange; return(new EpplusExcelCellHolder(excelRange)); }