在C#中使用全名搜索ActiveDirectory？

using System;
using System.DirectoryServices.AccountManagement;

class Program
{
    static void Main(string[] args)
    {
        string domainName = "your-domain-name";
        string username = "your-username";
        string password = "your-password";

        PrincipalContext context = new PrincipalContext(ContextType.Domain, domainName, username, password);
        UserPrincipal user = new UserPrincipal(context);
        user.Name = "Full Name";

        PrincipalSearcher searcher = new PrincipalSearcher();
        searcher.QueryFilter = user;

        foreach (Principal result in searcher.FindAll())
        {
            Console.WriteLine("Found user: {0}", result.Name);
        }
    }
}