这里的一类,将工作:
public static class FileDirectorySearcher
{
public static IEnumerable<string> Search(string searchPath, string searchPattern)
{
IEnumerable<string> files = GetFileSystemEntries(searchPath, searchPattern);
foreach (string file in files)
{
yield return file;
}
IEnumerable<string> directories = GetDirectories(searchPath);
foreach (string directory in directories)
{
files = Search(directory, searchPattern);
foreach (string file in files)
{
yield return file;
}
}
}
private static IEnumerable<string> GetDirectories(string directory)
{
IEnumerable<string> subDirectories = null;
try
{
subDirectories = Directory.EnumerateDirectories(directory, "*.*", SearchOption.TopDirectoryOnly);
}
catch (UnauthorizedAccessException)
{
}
if (subDirectories != null)
{
foreach (string subDirectory in subDirectories)
{
yield return subDirectory;
}
}
}
private static IEnumerable<string> GetFileSystemEntries(string directory, string searchPattern)
{
IEnumerable<string> files = null;
try
{
files = Directory.EnumerateFileSystemEntries(directory, searchPattern, SearchOption.TopDirectoryOnly);
}
catch (UnauthorizedAccessException)
{
}
if (files != null)
{
foreach (string file in files)
{
yield return file;
}
}
}
}
您可以使用它像这样:
IEnumerable<string> filesOrDirectories = FileDirectorySearcher.Search(@"C:\", "*.txt");
foreach (string fileOrDirectory in filesOrDirectories)
{
// Do something here.
}
这是递归的,但使用屈服的,给它一个低内存占用(下10KB在我的测试中)。如果您只需要匹配模式而不是目录的文件,只需将EnumerateFileSystemEntries
替换为EnumerateFiles
即可。
我们称之为功能而不是bug。没有一个理智的用户会忍受一个僵尸程序,用于*分钟*,同时枚举c:\驱动器上的每个文件。一个TB是一个很大的数字。 – 2011-12-17 22:05:56
@谁说应用程序在执行代码时运行UI? – sq33G 2011-12-17 22:22:49