如何在给定UserPrincipal对象的情况下从Active Directory获取"公司"和"部门"？

using System;
using System.DirectoryServices.AccountManagement;

public static void GetCompanyAndDepartment(UserPrincipal userPrincipal)
{
    // 获取UserPrincipal的DirectoryEntry对象
    DirectoryEntry directoryEntry = userPrincipal.GetUnderlyingObject() as DirectoryEntry;

    // 获取"公司"属性
    string company = directoryEntry.Properties["company"].Value.ToString();

    // 获取"部门"属性
    string department = directoryEntry.Properties["department"].Value.ToString();

    Console.WriteLine($"公司: {company}");
    Console.WriteLine($"部门: {department}");
}

UserPrincipal userPrincipal = // 获取UserPrincipal对象;
GetCompanyAndDepartment(userPrincipal);