C# 检查AD中是否存在完整的列公司

请告诉我如何检查用户是否填写了组织字段

我正在制作一本关于MVC5的电话簿。有一个模型和一个控制器

模型

控制器

using System.DirectoryServices;
using System.DirectoryServices.AccountManagement;

 public class PeopleController : Controller
    {
        public ActionResult Home(string department)
        {
            IEnumerable<Person> persons = GetPeople();
            return View(persons);
        }

        public static List<Person> GetPeople()
        {

            List<Person> people = new List<Person>();

            var path = new PrincipalContext(ContextType.Domain, "RCSON.local", "OU=RCSON, DC=RCSON, DC=local");

            UserPrincipal user = new UserPrincipal(path);
            user.Enabled = true;

            //user.Name = "*";
            //user.VoiceTelephoneNumber = "*";
            //user.EmailAddress = "*";
            //user.Description = "";
            
            var search = new System.DirectoryServices.AccountManagement.PrincipalSearcher();
            search.QueryFilter = user;
            var results = search.FindAll();
            foreach (UserPrincipal item in results)
            {
                var directoryEntry = item.GetUnderlyingObject() as DirectoryEntry;

                people.Add(new Person
                {
                    DisplayName = item.Name,
                    PhoneNumber = item.VoiceTelephoneNumber,
                    ExtensionPhoneNumber = item.VoiceTelephoneNumber,
                    Email = item.EmailAddress,
                    Office = directoryEntry.Properties["physicalDeliveryOfficeName"].Value as string,
                    Department = directoryEntry.Properties["subdivision"].Value as string,
                    //Title = directoryEntry.Properties["title"].Value as string,
                    DepartmentNumber = Convert.ToInt32(directoryEntry.Properties["departmentNumber"].Value),
                    Subdivision = directoryEntry.Properties["department"].Value as string,
                    Manager = directoryEntry.Properties["manager"].Value as string,
                    Mobile = directoryEntry.Properties["mobile"].Value as string,
                    EmployeeNumber = Convert.ToInt32(directoryEntry.Properties["employeeNumber"].Value)
                });
            }
            return people;
        }
}

使用System.DirectoryServices；
使用System.DirectoryServices.AccountManagement；
公共类PeopleController:控制器
{
公共行动结果主页（字符串部门）
{
IEnumerable persons=GetPeople（）；
返回视图（人）；
}
公共静态列表GetPeople（）
{
列表人员=新列表（）；
var path=newprincipalcontext（ContextType.Domain，“RCSON.local”，“OU=RCSON，DC=RCSON，DC=local”）；
UserPrincipal用户=新的UserPrincipal（路径）；
user.Enabled=true；
//user.Name=“*”；
//user.VoiceTelephoneNumber=“*”；
//user.EmailAddress=“*”；
//user.Description=“”；
var search=new System.DirectoryServices.AccountManagement.PrincipalSearcher（）；
search.QueryFilter=用户；
var results=search.FindAll（）；
foreach（结果中的UserPrincipal项）
{
var directoryEntry=item.getUnderlinegObject（）作为directoryEntry；
人物。添加（新人物）
{
DisplayName=项目名称，
PhoneNumber=item.VoicePhoneNumber，
ExtensionPhoneNumber=item.VoicePhoneNumber，
Email=item.EmailAddress，
Office=directoryEntry.Properties[“physicalDeliveryOfficeName”]。值为字符串，
Department=directoryEntry.Properties[“细分”]。值为字符串，
//Title=directoryEntry.Properties[“Title”]。值为字符串，
DepartmentNumber=Convert.ToInt32（directoryEntry.Properties[“DepartmentNumber”].Value），
细分=directoryEntry.Properties[“department”]。值为字符串，
Manager=directoryEntry.Properties[“Manager”]。值为字符串，
Mobile=directoryEntry.Properties[“Mobile”]。值为字符串，
EmployeeNumber=Convert.ToInt32（directoryEntry.Properties[“EmployeeNumber”].Value）
});
}
还人,；
}
}

[在此处输入图像描述][1] [1]: https://i.stack.imgur.com/kv2vh.jpg

---

如何筛选具有组织名称的用户。

是否要按属性筛选？我不明白。组织名称是什么？广告有“公司”或“组织”字段。我需要按此字段选择用户。什么是广告？公司或组织字段在哪里？我在这篇文章中看不到。广告是Active Directory。

using System.DirectoryServices;
using System.DirectoryServices.AccountManagement;

 public class PeopleController : Controller
    {
        public ActionResult Home(string department)
        {
            IEnumerable<Person> persons = GetPeople();
            return View(persons);
        }

        public static List<Person> GetPeople()
        {

            List<Person> people = new List<Person>();

            var path = new PrincipalContext(ContextType.Domain, "RCSON.local", "OU=RCSON, DC=RCSON, DC=local");

            UserPrincipal user = new UserPrincipal(path);
            user.Enabled = true;

            //user.Name = "*";
            //user.VoiceTelephoneNumber = "*";
            //user.EmailAddress = "*";
            //user.Description = "";
            
            var search = new System.DirectoryServices.AccountManagement.PrincipalSearcher();
            search.QueryFilter = user;
            var results = search.FindAll();
            foreach (UserPrincipal item in results)
            {
                var directoryEntry = item.GetUnderlyingObject() as DirectoryEntry;

                people.Add(new Person
                {
                    DisplayName = item.Name,
                    PhoneNumber = item.VoiceTelephoneNumber,
                    ExtensionPhoneNumber = item.VoiceTelephoneNumber,
                    Email = item.EmailAddress,
                    Office = directoryEntry.Properties["physicalDeliveryOfficeName"].Value as string,
                    Department = directoryEntry.Properties["subdivision"].Value as string,
                    //Title = directoryEntry.Properties["title"].Value as string,
                    DepartmentNumber = Convert.ToInt32(directoryEntry.Properties["departmentNumber"].Value),
                    Subdivision = directoryEntry.Properties["department"].Value as string,
                    Manager = directoryEntry.Properties["manager"].Value as string,
                    Mobile = directoryEntry.Properties["mobile"].Value as string,
                    EmployeeNumber = Convert.ToInt32(directoryEntry.Properties["employeeNumber"].Value)
                });
            }
            return people;
        }
}