public void CombinarCeldas(string celdaInicial, string celdaFinFinal) { MergeCells mergeCells; if (_workSheet.Elements <MergeCells>().Count() > 0) { mergeCells = _workSheet.Elements <MergeCells>().First(); } else { mergeCells = new MergeCells(); if (_workSheet.Elements <CustomSheetView>().Count() > 0) { _workSheet.InsertAfter(mergeCells, _workSheet.Elements <CustomSheetView>().First()); } else { _workSheet.InsertAfter(mergeCells, _workSheet.Elements <SheetData>().First()); } } MergeCell mergeCell = new MergeCell() { Reference = new StringValue(celdaInicial + ":" + celdaFinFinal) }; mergeCells.Append(mergeCell); }