打开xml sdk读取excel公式单元格

Question

我有单元格C4中具有公式= SUM(C2:C3)的excel文件.我在单元格C2和C3中分别有值15和17.以编程方式,我希望能够执行C4公式并返回值32(公式的结果).

有人建议我应该使用OpenXml SDK.因为此代码将由Windows Azure网站托管和使用.

这是我到目前为止的代码,单元格不执行C4中的公式.

string filename = Server.MapPath("/") + "ExcelData.xlsx";

using (SpreadsheetDocument document = SpreadsheetDocument.Open(filename, true))
{
    document.WorkbookPart.Workbook.CalculationProperties.ForceFullCalculation = true;
    document.WorkbookPart.Workbook.CalculationProperties.FullCalculationOnLoad = true;

    Sheet sheet = document.WorkbookPart.Workbook.Descendants<Sheet>().SingleOrDefault(s => s.Name == "myRange1");
    if (sheet == null)
    {
        throw new ArgumentException(
            String.Format("No sheet named {0} found in spreadsheet {1}", "myRange1", filename), "sheetName");
    }
    WorksheetPart worksheetPart = (WorksheetPart)document.WorkbookPart.GetPartById(sheet.Id);

    int rowIndex = int.Parse("C4".Substring(1));

    Row row = worksheetPart.Worksheet.GetFirstChild<SheetData>().
            Elements<Row>().FirstOrDefault(r => r.RowIndex == rowIndex);

    Cell cell = row.Elements<Cell>().FirstOrDefault(c => "C4".Equals(c.CellReference.Value));

}

Answer 1

document.WorkbookPart.Workbook.CalculationProperties.ForceFullCalculation = true;
document.WorkbookPart.Workbook.CalculationProperties.FullCalculationOnLoad = true;

根据MSDN:

使用CellFormula(<f>)元素定义公式文本.公式可以包含包含各种预定义函数的数学表达式.所述CellValue(<V>)元件,存储基于计算式的最后时间缓存式值.