Hello Oliver，

Hello Oliver,

JavaScript代码在沙箱模式下运行。您无法访问文件系统。

The JavaScript code is run in the sandbox mode. You can't access the file system.

如果您需要处理用户计算机上的文件系统，我建议您创建一个COM加载项（例如基于VSTO）。请参阅演练：为Outlook创建第一个VSTO加载项
 快速入门。 

I'd suggest creating a COM add-in (VSTO based for example) if you need to deal with a file system on the user's machine. See Walkthrough: Creating Your First VSTO Add-In for Outlook to get started quickly.