从MVC#导出到excel后，如何以datetime格式显示日期

我正在使用EPPlus库从sql表中读取日期时间值并将其导出到excel。导出工作正常，但当我查看excel文件时，日期显示为double而不是dateime，我将代码放在下面

workSheet.Row(1).Height = 20;
workSheet.Row(1).Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
workSheet.Row(1).Style.Font.Bold = true;

workSheet.Cells[1, 1].Value = "UploadId";
workSheet.Cells[1, 2].Value = "ClientId";
workSheet.Cells[1, 3].Value = "Email1";
workSheet.Cells[1, 4].Value = "Email2";
workSheet.Cells[1, 5].Value = "Email3";
workSheet.Cells[1, 6].Value = "Email4";
workSheet.Cells[1, 7].Value = "DateStamp";


//Body of table  
//  
int recordIndex = 2;
foreach (var exportData in dataToExport)
{
    //double date = double.Parse(date);
    //string sDate = (workSheet.Cells[recordIndex, 7]).Value.ToString();
    //double date = double.Parse(sDate);
    //var dateTime = DateTime.FromOADate(date).ToString("MMMM dd, yyyy");
    workSheet.Cells[recordIndex, 1].Value = UploadId;
    workSheet.Cells[recordIndex, 2].Value = exportData.ClientId;
    workSheet.Cells[recordIndex, 3].Value = exportData.Email1;
    workSheet.Cells[recordIndex, 4].Value = exportData.Email2;
    workSheet.Cells[recordIndex, 5].Value = exportData.Email3;
    workSheet.Cells[recordIndex, 6].Value = exportData.Email4;
    workSheet.Cells[recordIndex, 7].Value = exportData.DateStamp;             
    recordIndex++;
}

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像这样的事情应该可以做到

工作表.Cells[recordindex，7].Style.Numberformat.Format=“yyyy-MM-dd”