未始终触发 Outlook ItemAdd 事件

Question

我正在尝试确定收到的邮件是否是垃圾邮件。Itemadd 事件只工作一次。它不会持续触发。我该如何解决这个问题？我做以下事情：public partial class ThisAddIn{    private void ThisAddIn_Startup(object sender, System.EventArgs e)    {        Outlook.MAPIFolder inbox = Application.Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);        inbox.ItemAdd += new Outlook.ItemsEvents_ItemAddEventHandler(InboxFolderItemAdded);    }    private void InboxFolderItemAdded(object Item)    {        if (Item is Outlook.MailItem)        {            Debug.WriteLine("I'm in!");            Outlook.MailItem mail = (Outlook.MailItem)Item;            int[] answer = Predict(mail);            if(answer[0] == 0) // Not spam            {                Outlook.MAPIFolder inboxFolder = ((Outlook.MAPIFolder)this.Application.ActiveExplorer().Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox));                mail.Move(inboxFolder);            }            else if(answer[0] == 1) // Spam            {                Outlook.MAPIFolder junkFolder = ((Outlook.MAPIFolder)this.Application.ActiveExplorer().Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderJunk));                mail.Move(junkFolder);            }        }    }    private int[] Predict(Outlook.MailItem mailBody)    {        Debug.WriteLine("I'm inside in predict function");        double[]feature = featureExtraction.findFeatureIncomingMail(mailBody.Body);        int[] answer = tree.Decide(feature);        return answer;    }}当我给自己发送邮件时，“我在”和“我在预测函数中”只在调试控制台中显示一次。

Answer 1

首先，您的代码无法编译——对象上没有ItemAdd事件MAPIFolder。它由Items对象公开（从MAPIFolder.Items属性返回）。

其次，引发事件 ( Items) 的对象必须保持活动状态 - 在类级别声明它，而不是作为局部变量，在ThisAddIn_Startup方法退出时由垃圾收集器释放。

Answer 2

工作代码就像

 public partial class ThisAddIn

 {

    Outlook.Items items=null;

private void ThisAddIn_Startup(object sender, System.EventArgs e)

{

     Outlook.MAPIFolder inbox = 

    Application.Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);

    items=inbox.Items;

    items.ItemAdd += new 

    Outlook.ItemsEvents_ItemAddEventHandler(InboxFolderItemAdded);

}

private void InboxFolderItemAdded(object Item)

{

    if (Item is Outlook.MailItem)

    {

        Debug.WriteLine("I'm in!");

        Outlook.MailItem mail = (Outlook.MailItem)Item;

        int[] answer = Predict(mail);

        if(answer[0] == 0) // Not spam

        {

            Outlook.MAPIFolder inboxFolder = ((Outlook.MAPIFolder)this.Application.ActiveExplorer().Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox));

            mail.Move(inboxFolder);

        }

        else if(answer[0] == 1) // Spam

        {

            Outlook.MAPIFolder junkFolder = ((Outlook.MAPIFolder)this.Application.ActiveExplorer().Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderJunk));

            mail.Move(junkFolder);

        }

    }

}

private int[] Predict(Outlook.MailItem mailBody)

{

    Debug.WriteLine("I'm inside in predict function");

    double[]feature = featureExtraction.findFeatureIncomingMail(mailBody.Body);

    int[] answer = tree.Decide(feature);

    return answer;

 }

}