检查给定目录中是否存在任何目录 [英] Check that any directory exists inside given one

问题描述

我的应用程序是Windows，C#3.0.我要确保给定的目录不包含子目录.天真的代码，例如

My application is Windows, C# 3.0. I want to make sure that a directory given does not contains subdirectories. Naive code like

if (Directory.GetDirectories(path).Length != 0)

在包含以下内容的目录上将非常缓慢地工作10000个子目录，因为它将建立一个子目录列表，而即使只有1个目录对我来说已经足够.

will work very slow on directories which contain e.g. 10000 subdirectories, because it will build a list of subdirectories, while even 1 directory is already enough for me.

.NET中是否可以快速确定1个子目录?

Is there a way in .NET to determine 1 subdirectory quickly?

推荐答案

if (Directory.EnumerateDirectories().Any())

EnumerateDirectories仅在枚举返回的序列(延迟执行)时才返回目录.

EnumerateDirectories will return directories only as you enumerate the returned sequence (deferred execution).

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