小编Sup*_*man的帖子

//使用EPPlus.dll

使用OfficeOpenXml

string path = @"C:\Users\Superman\Desktop\recc\1996.xlsx";
            ExcelPackage package = new ExcelPackage(new FileInfo(path));
            var sheet3 = package.Workbook.Worksheets[3];
            sheet3.Cells["A1:B5"].Merge = true;
            var mergedId = sheet3.MergedCells[1, 1];
            sheet3.Cells[mergedId].First().Value = "123"; // error: System.InvalidOperationException : Sequence does not contain any elements
            package.Save();

怎么了？怎么做？