Question

我正在使用Windows窗体。我正在尝试显示Active Directory查询的结果一个OU。所有用户和一组选择的属性。在此示例中，我仅使用email属性。我的问题分为三个部分。我真的很想回答第一部分。

我的DataTable似乎无法正确加载。我已经遍历了调试器，加载表的循环中有一个项目。这是问题的重点
dataGridView没有显示任何内容。计数是正确的。我相信dataGridView的实现是正确的。
当我运行查询（甚至是Powershell等效项）时，仍然需要大约10分钟才能完成。这是一个大量的OU对象。

我的代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.DirectoryServices.AccountManagement;
using System.DirectoryServices;
using AD_WinForm.hrlper;
using System.Data.Common;

namespace AD_WinForm
{
 public partial class frmMain : Form
 {

    public frmMain()
    {   
        InitializeComponent();
    }


    private void btnGet_Click(object sender, EventArgs e)
    {
        try {
            string ou = THe distinguished name of OU;
            using (PrincipalContext ctx = new PrincipalContext(ContextType.Domain, 
                     Environment.UserDomainName, ou))
            {
                UserPrincipal user = new UserPrincipal(ctx);
                using (PrincipalSearcher ps = new PrincipalSearcher(user))
                {
                    //new code
                    DataTable results = new DataTable();
                    results.Columns.Add("mail");
                    // end new code
                    int count = 0;
                    foreach (Principal p in ps.FindAll())
                    {

                        UserPrincipal u = p as UserPrincipal;
                        if (u != null)
                        {

                            DirectoryEntry entry = 
                                 (DirectoryEntry)p.GetUnderlyingObject();
                            DirectorySearcher search = new DirectorySearcher(entry);
            //UAC -  (no disabled accounts or password never expires) and has a Email 
                       //Account
                            string query = "(&(objectCategory=person)(objectClass=user)(! 
                           (userAccountControl:1.2.840.113556.1.4.803:=2))(&(mail=*)))";


                            search.Filter = query;
                            search.PropertiesToLoad.Add("mail");

                            SearchResultCollection mySearchResultColl = search.FindAll();
                            //old code
                            //DataTable results = new DataTable();
                            //results.Columns.Add("mail");
                            //end old code

                            foreach (SearchResult sr in mySearchResultColl)
                            {
                                DataRow dr = results.NewRow();
                                DirectoryEntry de = sr.GetDirectoryEntry();
                                dr["mail"] = de.Properties["mail"].Value.ToString();
                                //dr["guid"] = de.Properties["guid"].Value;
                                results.Rows.Add(dr);
                                results.AcceptChanges();
                                count++;

                            }                             
                            DataView DV = new DataView(results);
                            dgvActiveDirectory.DataSource = DV;                                
                        }
                    }
                    lblCount.Text = count.ToString();
                }

            }
        }
        catch (NullReferenceException ex) {
            MessageBox.Show(ex.ToString());
        }
    }

  }
 }

查询AD并将结果返回到DataTable中，然后将数据表传递给dataGridView进行显示

0 个答案: