如何创建 Outlook 加载项，以便在用户尝试回复域外发件人时向用户发出警报？

Question

我是 C# 编码新手。我目前正在尝试创建一个 Outlook 加载项，以便在用户尝试回复非“@abc.com”的任何人时提示和提醒用户。例如，如果 '[email protected]' 是尝试回复 ' [电子邮件受保护]'，系统会弹出一个警告 Ben 的窗口，警告他“您即将回复非来自 '@abc.com' 的人。”有“确定”和“取消”选项。

我在网上引用了下面的代码，但此加载项仅允许我编辑我尝试发送的电子邮件的字段值。我什至无法弄清楚如何处理和实现处理回复的代码。我尝试过在线研究并看到过像 .reply() 这样的方法，但我对如何应用它们感到困惑。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using Outlook = Microsoft.Office.Interop.Outlook;
using Office = Microsoft.Office.Core;

namespace FirstOutlookAddIn
{

    public partial class ThisAddIn
    {

        Outlook.Inspectors inspectors;
        private void ThisAddIn_Startup(object sender, System.EventArgs e)
        {
            inspectors = this.Application.Inspectors;
            inspectors.NewInspector +=
            new Microsoft.Office.Interop.Outlook.InspectorsEvents_NewInspectorEventHandler(Inspectors_NewInspector);
        }


        void Inspectors_NewInspector(Microsoft.Office.Interop.Outlook.Inspector Inspector)
        {
            Outlook.MailItem mailItem = Inspector.CurrentItem as Outlook.MailItem;
            if (mailItem != null)
            {
                if (mailItem.EntryID == null)
                {
                    mailItem.To = "Testing for Recipient.";
                    mailItem.Subject = "Currently testing add-in for Subject.";
                    mailItem.Body = "Currently testing add-in for Body.";
                    mailItem.CC = "Testing for CC.";
                }

            }

        }

            private void ThisAddIn_Shutdown(object sender, System.EventArgs e)
        {
            // Note: Outlook no longer raises this event. If you have code that 
            //    must run when Outlook shuts down, see https://go.microsoft.com/fwlink/?LinkId=506785
        }

        #region VSTO generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InternalStartup()
        {
            this.Startup += new System.EventHandler(ThisAddIn_Startup);
            this.Shutdown += new System.EventHandler(ThisAddIn_Shutdown);
        }
    
        #endregion
    }
}

Answer 1

首先，您只是跟踪Inspectors.newinspector事件。但是在大多数情况下，答复将是内联的 - 您还需要explorer.inlineresponse event（其中explorer来自application.active> application.activeeviveexplorer，它可以null null null在启动时，您还需要application.explorers.newexplorer event）。

其次，您需要在mailItem.recipients集合中循环循环，对于每个收件人，请检查coce> contectient.address.address property（您可以测试比赛）。

Answer 2

监听 send event，因为无论 inline 回复还是 inspector 级别回复都会触发该事件。

this.Application.ItemSend += new Outlook.ApplicationEvents_11_ItemSendEventHandler(Application_ItemSend);

然后可以按如下方式实现此操作，

/// param : item -> mail item to be sent
/// param : cancel -> allows you to cancel sending mail in outlook. By default value is false. 
private void Application_ItemSend(object item, ref bool cancel){
   Outlook.MailItem mail = (Outlook.MailItem)item;
   // read "mail.To" and check for your logic; 
   // if To list has other domains, then show the warning prompt maybe like below,
   var result = MessageBox.Show("yourmessage","title",MessageBoxButtons.YesNo);
   if(result == DialogResult.No)
     cancel = true; // setting this to `true` will stop sending an email out.
}

您可以在此处的 MS 博客中阅读此事件 Item_Send