为什么我写照网上写的设置文件夹权限的代码没有效果？
DirectoryInfo dirinfo = new DirectoryInfo(@"C:\Test");System.Security.AccessControl.DirectorySecurity dirsecurity = dirinfo.GetAccessControl();dirsecurity.AddAccessRule(new System.Security.AccessControl.FileSystemAccessRule("IIS_WPG", System.Security.AccessControl.FileSystemRights.FullControl, System.Security.AccessControl.InheritanceFlags.None, System.Security.AccessControl.PropagationFlags.None, System.Security.AccessControl.AccessControlType.Allow));dirinfo.SetAccessControl(dirsecurity);