转换Excel格式

1 var app = new Microsoft.Office.Interop.Excel.Application();
2                             var wb = app.Workbooks.Open(fileInfos[n].FullName); //文件的路径名称
3                             
4                             wb.SaveAs(fileInfos[n].FullName + "x", Microsoft.Office.Interop.Excel.XlFileFormat.xlOpenXMLWorkbook);
5                             wb.Close();
6                             app.Quit();