如何决定是否新发送,回复或转发电子邮件?

时间:2011-01-12 13:54:53

标签: c# outlook-addin outlook-2007

我使用Visual Studio 2010创建Outlook 2007 Addin。现在我想知道是否新发送,回复或转发了电子邮件。这有什么属性吗?

using Outlook = Microsoft.Office.Interop.Outlook;

namespace _Outlook2k7_Add_In
{
    public partial class ThisAddIn
    {
        private void ThisAddIn_Startup(object sender, System.EventArgs e)
        {
        }

        private void ThisAddIn_Shutdown(object sender, System.EventArgs e)
        {
        }

        void Application_ItemSend(object Item, ref bool Cancel)
        {
            Outlook.MailItem mail = Item as Outlook.MailItem;

            if (mail == null)
                return;

            // Magic?
        }

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

        #endregion
    }
}

2 个答案:

答案 0 :(得分:1)

有3个扩展MAPI属性可处理回复/转发的消息状态:

PR_ICON_INDEX(0x10800003) PR_LAST_VERB_EXECUTED(0x10810003) PR_LAST_VERB_EXECUTION_TIME(0x10820040)

要在Outlook 2007/2010中获取这些值,请使用PropertyAccessor对象:

http://msdn.microsoft.com/en-us/library/bb176395(office.12).aspx

如果是正在发送的邮件,则MailItem.Sent属性仍为False。

答案 1 :(得分:0)

MAPIFolder inbox = Application.Session.GetDefaultFolder(OlDefaultFolders.olFolderInbox);
Items unreadItems = inbox.Items.Restrict("[UnRead] = true");

foreach (MailItem mail in unreadItems)
{
    // Do Stuff
}

这对我来说似乎很有效。我不知道mailitem本身会有这些信息。您可以过滤 olFolderSentMail 文件夹。