ExcelPackage不能以编程方式使用C#

我试图编辑一个现有的.xlsx扩展名的Excel文件使用C#,但它不是保存新的价值。我的代码如下。任何人都可以帮助我?

string path = @"D:\Demo\test.xlsx" ; FileInfo file = new FileInfo(Path.GetFileName(path)); using (ExcelPackage xlPackage = new ExcelPackage(file)) { ExcelWorkbook workBook = xlPackage.Workbook; ExcelWorksheet ws = workBook.Worksheets[1]; ws.Cells[8, 6].Value = 25; xlPackage.Save(); } 

@符号放在pathstring之前,以防止自动删除或手动转义\字符

 string path = @"D:\test\test.xslx"; 

要么

 string path = "D:\\test\\test.xslx";