获取文件名不特定目录的路径

问题描述

我怎样才能得到一个目录（及其subdirectorys）的所有文件名不完整的路径？ Directory.GetFiles（...）总是返回完整的路径！

How can I get all filenames of a directory (and its subdirectorys) without the full path?Directory.GetFiles(...) returns always the full path!

推荐答案

您可以提取完整路径文件名。

You can extract the filename from full path.

var filenames3 = Directory
                .GetFiles(dirPath, "*", SearchOption.AllDirectories)
                .Select(f => Path.GetFileName(f));

.NET 4中，文件名只

var filenames4 = Directory
                .EnumerateFiles(dirPath, "*", SearchOption.AllDirectories)
                .Select(Path.GetFileName); // <-- note you can shorten the lambda

返回目录中的文件名使用相对路径

// - file1.txt
// - file2.txt
// - subfolder1/file3.txt
// - subfolder2/file4.txt

var skipDirectory = dirPath.Length;
// because we don't want it to be prefixed by a slash
// if dirPath like "C:\MyFolder", rather than "C:\MyFolder\"
if(!dirPath.EndsWith("" + Path.DirectorySeparatorChar)) skipDirectory++;

var filenames4s = Directory
                .EnumerateFiles(dirPath, "*", SearchOption.AllDirectories)
                .Select(f => f.Substring(skipDirectory));

确认LinqPad ...

filenames3.SequenceEqual(filenames4).Dump(".NET 3 and 4 methods are the same?");

filenames3.Dump(".NET 3 Variant");
filenames4.Dump(".NET 4 Variant");
filenames4s.Dump(".NET 4, subfolders Variant");

注意 *文件（目录，模式，行为）方法可以简化非递归 *文件（目录） 的变种，如果子并不重要的

Note that the *Files(dir, pattern, behavior) methods can be simplified to non-recursive *Files(dir) variants if subfolders aren't important

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