SDL Tridion EventSubscription UnSubscribe问题

Question

我们正在尝试在我们的事件代码中取消订阅eventSubscripton。我们使用以下代码

[TcmExtension("EventHandlerExtension")]
public class EventHandler : TcmExtension, IDisposable
{
    private EventSubscription componentSaveSubscription = null;
    private EventSubscription componentPublishSubscription = null;

    #region Public Methods
    /// <summary>
    /// Handle for Eventing System
    /// </summary>
    public EventHandler()
    {
        Subscribe();
    }
    /// <summary>
    /// Subscribe Events
    /// </summary>
    public void Subscribe()
    {
        //News Article Page created when component Save
        componentSaveSubscription = EventSystem.Subscribe<Component, SaveEventArgs>(OnComponentSavePost, EventPhases.TransactionCommitted);

        //EventSystem.Subscribe<Component, SaveEventArgs>(OnComponentSavePost, EventPhases.TransactionCommitted);
        componentPublishSubscription = EventSystem.Subscribe<Component, PublishOrUnPublishEventArgs>(OnComponentPublishOrUnPublishPost, EventPhases.TransactionCommitted);
        //EventSystem.Subscribe<StructureGroup, PublishOrUnPublishEventArgs>(OnStructureGroupPublishInitiated, EventPhases.TransactionCommitted);

    }
    /// <summary>
    /// IDisposable Implementation
    /// </summary>
    public void Dispose()
    {

        if (componentSaveSubscription != null) componentSaveSubscription.Unsubscribe();
        if (componentPublishSubscription != null) componentPublishSubscription.Unsubscribe();
    }}

我们观察到的是，一旦调用了“{EventSubsciption}.Unsubscribe”，eventing就会停止对它应该工作的后续事件的工作。一旦与事件系统相关的服务重新启动，事件代码只在第一次按预期工作，并且不会在后续事件中被调用(对于它应该工作的事件)。

Answer 1

尝试删除Dispose方法，看看是否会有所不同。Tridion可能会在触发事件的第一个实例时实例化事件处理程序，然后再也不会实例化，直到系统重新启动。因此，如果您取消订阅并进行处置，那么您的类将不会再次实例化。也有可能你的环境中有其他东西在干扰你。很难说，但尝试先删除Dispose。

我的样板处理程序看起来像这样：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using Tridion.ContentManager;
using Tridion.ContentManager.CommunicationManagement;
using Tridion.ContentManager.ContentManagement;
using Tridion.ContentManager.ContentManagement.Fields;
using Tridion.ContentManager.Extensibility;
using Tridion.ContentManager.Extensibility.Events;

namespace NicksEventSystem
{
    [TcmExtension("NicksEventSystemExtension")]
    public class NicksEventHandler : TcmExtension
    {
        public NicksEventHandler()
        {
            Subscribe();
        }

        private void Subscribe()
        {
            EventSystem.Subscribe<Component, FinishActivityEventArgs>(MyEvent, EventPhases.TransactionCommitted);
        }

        private void MyEvent(Component wfComponent)
        {
            //... Do stuff!
        }

    }
}