此链接 http://msdn.microsoft.com/en-us/library/aa772153(VS.85).aspx说:

您最多可以在单个 LDAP 连接上注册五个通知请求。您必须有一个专用线程来等待通知并快速处理它们。当您调用 ldap_search_ext 函数来注册通知请求时，该函数会返回标识该请求的消息标识符。然后使用 ldap_result 函数等待更改通知。发生更改时，服务器会向您发送一条 LDAP 消息，其中包含生成通知的通知请求的消息标识符。这会导致 ldap_result 函数返回标识更改对象的搜索结果。

我在 .NET 文档中找不到类似的行为。如果有人知道如何在 C# 中做到这一点，我将不胜感激。我希望查看系统中所有用户的属性何时发生更改，以便我可以根据更改的内容执行自定义操作。

我查看了stackoverflow和其他来源但没有运气。

谢谢。

最佳答案

我不确定它是否满足您的需求，但请查看 http://dunnry.com/blog/ImplementingChangeNotificationsInNET.aspx

编辑:从文章中添加文本和代码:

有三种方法可以确定 Active Directory(或 ADAM)中发生的变化。这些已经在 MSDN 的标题为“Overview of Change Tracking Techniques" ”中记录了一段时间。总而言之:

public class ChangeNotifier : IDisposable
{
    LdapConnection _connection;
    HashSet<IAsyncResult> _results = new HashSet<IAsyncResult>();

    public ChangeNotifier(LdapConnection connection)
    {
        _connection = connection;
        _connection.AutoBind = true;
    }

    public void Register(string dn, SearchScope scope)
    {
        SearchRequest request = new SearchRequest(
            dn, //root the search here
            "(objectClass=*)", //very inclusive
            scope, //any scope works
            null //we are interested in all attributes
            );

        //register our search
        request.Controls.Add(new DirectoryNotificationControl());

        //we will send this async and register our callback
        //note how we would like to have partial results

        IAsyncResult result = _connection.BeginSendRequest(
            request,
            TimeSpan.FromDays(1), //set timeout to a day...
            PartialResultProcessing.ReturnPartialResultsAndNotifyCallback,
            Notify,
            request);

        //store the hash for disposal later

        _results.Add(result);
    }

    private void Notify(IAsyncResult result)
    {
        //since our search is long running, we don't want to use EndSendRequest
        PartialResultsCollection prc = _connection.GetPartialResults(result);

        foreach (SearchResultEntry entry in prc)
        {
            OnObjectChanged(new ObjectChangedEventArgs(entry));
        }
    }

    private void OnObjectChanged(ObjectChangedEventArgs args)
    {
        if (ObjectChanged != null)
        {
            ObjectChanged(this, args);
        }
    }

    public event EventHandler<ObjectChangedEventArgs> ObjectChanged;

    #region IDisposable Members

    public void Dispose()
    {
        foreach (var result in _results)
        {
            //end each async search
            _connection.Abort(result);

       }
    }

    #endregion
}


public class ObjectChangedEventArgs : EventArgs
{
    public ObjectChangedEventArgs(SearchResultEntry entry)
    {
        Result = entry;
    }

    public SearchResultEntry Result { get; set;}
}

static void Main(string[] args)
{
    using (LdapConnection connect = CreateConnection("localhost"))
    {
        using (ChangeNotifier notifier = new ChangeNotifier(connect))
        {
            //register some objects for notifications (limit 5)
            notifier.Register("dc=dunnry,dc=net", SearchScope.OneLevel);
            notifier.Register("cn=testuser1,ou=users,dc=dunnry,dc=net", SearchScope.Base);

            notifier.ObjectChanged += new EventHandler<ObjectChangedEventArgs>(notifier_ObjectChanged);

            Console.WriteLine("Waiting for changes...");
            Console.WriteLine();
            Console.ReadLine();
        }
    }
}


static void notifier_ObjectChanged(object sender, ObjectChangedEventArgs e)
{
    Console.WriteLine(e.Result.DistinguishedName);

    foreach (string attrib in e.Result.Attributes.AttributeNames)
    {
        foreach (var item in e.Result.Attributes[attrib].GetValues(typeof(string)))
        {
            Console.WriteLine("\t{0}: {1}", attrib, item);
        }
    }
    Console.WriteLine();
    Console.WriteLine("====================");
    Console.WriteLine();
}

关于c# - 使用 C# 向 Active Directory 注册更改通知，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/2002606/