您可以使用多个过滤器调用 Directory.GetFiles() 吗? [英] Can you call Directory.GetFiles() with multiple filters?

问题描述

我正在尝试使用 Directory.GetFiles() 方法来检索多种类型的文件列表，例如 mp3 和 jpg的.我已经尝试了以下两种方法，但都没有运气:

I am trying to use the Directory.GetFiles() method to retrieve a list of files of multiple types, such as mp3's and jpg's. I have tried both of the following with no luck:

Directory.GetFiles("C:\path", "*.mp3|*.jpg", SearchOption.AllDirectories);
Directory.GetFiles("C:\path", "*.mp3;*.jpg", SearchOption.AllDirectories);

有没有办法在一个电话中做到这一点?

Is there a way to do this in one call?

推荐答案

对于 .NET 4.0 及更高版本，

For .NET 4.0 and later,

var files = Directory.EnumerateFiles("C:\path", "*.*", SearchOption.AllDirectories)
            .Where(s => s.EndsWith(".mp3") || s.EndsWith(".jpg"));

对于 .NET 的早期版本，

For earlier versions of .NET,

var files = Directory.GetFiles("C:\path", "*.*", SearchOption.AllDirectories)
            .Where(s => s.EndsWith(".mp3") || s.EndsWith(".jpg"));

请阅读评论.Paul Farry 建议的改进，以及 Christian.K 指出两者都非常重要.

edit: Please read the comments. The improvement that Paul Farry suggests, and the memory/performance issue that Christian.K points out are both very important.

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