如何利用.NET的DirectorySecurity对象处理目录安全性问题

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using System.Security.AccessControl;

namespace DirectoryAuditApplication {

class Program {

static void Main(string[] args) {

string[] subDirs;
inti;
DirectorySecurityds = null;

try {
subDirs = Directory.GetDirectories("c:\\");

for (i = 0; i <= subDirs.GetUpperBound(0); i++) {
ds = Directory.GetAccessControl(subDirs[i]);

if (!(ds == null)) {
ds.AddAuditRule(new FileSystemAuditRule("Domain\\TechRepublicUser", FileSystemRights.Delete, AuditFlags.Failure));
ds.RemoveAuditRule(new FileSystemAuditRule("Domain\\Tester", FileSystemRights.CreateDirectories, AuditFlags.Success));

}
Directory.SetAccessControl(subDirs[i], ds);

} } catch (IOException e) {
Console.WriteLine("Exception {0}", e.Message.ToString());

} } } }