如何使用OpenXML和C＃从Excel文档中的合并单元格获取值

I have problem with merged cells. If I have value in first cell (B3) and this cell is merged with some others cells (for example C3, D3, E3, F3, F4) - in Excel document I can see only one value. This is great, but I would like to get from my GetCellValue function the same B3 value, when I ask for C3, D3, E3, F3 value.I have problem with merged cells. If I have val