在C＃中从文件搜索中排除目录

Question

我尝试使用来搜索文件系统

Directory.EnumerateDirectories

比方说，我想在Windows中搜索整个C：\，但是我想排除某些路径（例如C：\ asdf，C：\ lorem \ ipsum）或文件夹名称（例如folder1，folder2，... ）。我想创建一个从字符串列表中过滤出路径和文件夹的语句。这意味着：

List<string> exclude = new List<string>{@"C:\asdf", @"C:\lorem\ipsum", "folder2"};

如何从上述目录搜索中排除这些路径和文件夹名称？

Answer 1

List<string> exclude = new List<string> { @"C:\asdf", @"C:\lorem\ipsum", "folder2" };

Func<string, string, bool> containsCaseInsensitivePredicate = (s, p) => s.IndexOf(p, StringComparison.OrdinalIgnoreCase) != -1;

Func<string, bool> notInExcludeListPredicate = (s) => !exclude.Any(ex => containsCaseInsensitivePredicate(ex, s));

IEnumerable<string> directories = Directory.EnumerateDirectories(@"C:\").Where(notInExcludeListPredicate);