如何将Excel单元格的数据类型从c#更改为CellValues.String

using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;

string filePath = "路径/文件名.xlsx";
using (SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Open(filePath, true))
{
    WorkbookPart workbookPart = spreadsheetDocument.WorkbookPart;
    WorksheetPart worksheetPart = workbookPart.WorksheetParts.First();
    Worksheet worksheet = worksheetPart.Worksheet;

string cellReference = "A1"; // 要更改的单元格引用
Cell cell = worksheetPart.Worksheet.Descendants<Cell>().FirstOrDefault(c => c.CellReference.Value == cellReference);

CellValue cellValue = new CellValue("新的字符串值");
cell.DataType = new EnumValue<CellValues>(CellValues.String);
cell.CellValue = cellValue;

worksheetPart.Worksheet.Save();
spreadsheetDocument.Close();