我在哪里可以找到，做了以下的例子吗？

Where can I find an example that does the following?

这似乎是一个简单的任务，但我不能找到一个解决方案。

This seems like a simple task but I can't find a solution.

的总体目标是，以指定自定义权限，并利用它们在应用程序中控制权。

The overall goal is to assign custom permissions and use them to control rights within an application.

推荐答案

如果你在.NET 3.5及以上，你应该看看 System.DirectoryServices.AccountManagement （S.DS.AM）命名空间。阅读所有关于它的：

If you're on .NET 3.5 and up, you should check out the System.DirectoryServices.AccountManagement (S.DS.AM) namespace. Read all about it here:

基本上，你可以定义域范围内，并很容易地找到在AD用户和/或组：

Basically, you can define a domain context and easily find users and/or groups in AD:

// set up domain context
PrincipalContext ctx = new PrincipalContext(ContextType.Domain);

// find a user
UserPrincipal user = UserPrincipal.FindByIdentity(ctx, "SomeUserName");

if(user != null)
{
   // do something here....     
}

// find the group in question
GroupPrincipal group = GroupPrincipal.FindByIdentity(ctx, "YourGroupNameHere");

// if found....
if (group != null)
{
   // iterate over members
   foreach (Principal p in group.GetMembers())
   {
      Console.WriteLine("{0}: {1}", p.StructuralObjectClass, p.DisplayName);
      // do whatever you need to do to those members
   }
}

新S.DS.AM使得它可以很容易地玩弄用户和组AD！

The new S.DS.AM makes it really easy to play around with users and groups in AD!

最后一点：权限。这些并不存储在Active Directory中 - 因此，你不能检索来自任何AD code

The last point: permissions. Those aren't stored in Active Directory - and therefore, you can't retrieve those from any AD code.

权限存储在单个文件系统项，例如文件和/或目录 - 或其它对象（如注册表项，等等）。当你有一个AD组或用户帐户，你可以阅读它的SID（安全标识符）属性 - 即SID将在ACL的（访问控制列表），显示了所有通过Windows - 但是从用户或组，有没有一种机制来获取所有权限，它可能在本机/服务器的任何地方。

Permissions are stored on the individual file system items, e.g. files and/or directories - or other objects (like registry keys, etc.). When you have an AD group or user account, you can read it's SID (Security Identifier) property - that SID will show up in ACL's (Access Control Lists) all over Windows - but from the user or group, there's no mechanism to get all permissions it might have anywhere in the machine/server.

权限的文件和目录可以如使用上的的FileInfo 和的DirectoryInfo 类：

FileInfo info = new FileInfo(@"D:\test.txt");
FileSecurity fs = info.GetAccessControl();

DirectoryInfo dir = new DirectoryInfo(@"D:\test\");
DirectorySecurity ds = dir.GetAccessControl();