保存Mailitem的对象或可用于调用已保存的Mailitem的任何属性

Question

我使用的是VS2010，Dot Net Framework2.0。我已经在Extensibility->Shared Add-ins for Outlook中创建了一个项目。

我想将Outlook.MailItem对象保存在explorer_SelectionChange()上的DataTable中，并在以后使用这个Outlook.MailItem对象操作主题和正文。

当我在数据表中保存邮件项的对象时，它被保存为SYS.ComAddins。以下是代码类变量：

private Outlook.MailItem connectingMailItem;
private Outlook.Inspectors inspectors;
private Outlook.Application applicationObject;
private object addInInstance;
private Outlook.Explorer explorer;
DataTable dtMailItem = new DataTable();

OnConnection：

    explorer = this.Application.ActiveExplorer();
    explorer.SelectionChange += new Outlook.ExplorerEvents_10_SelectionChangeEventHandler(explorer_SelectionChange);
    dtMailItem.Columns.Add("MailItem",typeOf(Outlook.MailItem));
    tFollowUp = new Timer();
    tFollowUp.Interval = 100000;
    tFollowUp.Tick += new EventHandler(tFollowUp_Tick);

explorer_SelectionChange

void explorer_SelectionChange()
{
    if (connectingMailItem != null && connectingMailItem is Outlook.MailItem)
    {
        Marshal.ReleaseComObject(connectingMailItem);
        // Perform a Garbage Collection
        GC.Collect();
        connectingMailItem = null;
        return;
    }
    foreach (object selectedItem in explorer.Selection)
    {
        connectingMailItem = selectedItem as Outlook.MailItem;
        break;
    }
    if (connectingMailItem != null && connectingMailItem is Outlook.MailItem)
    {                
        dtMailItem.Rows.Add(connectingMailItem);
        dtMailItem.AcceptChanges();
    } 
}

tFollowUp_Tick

 void tFollowUp_Tick(object sender, EventArgs e)
{
    if(dtMailItem.Rows.Count <= 0)
    {
        foreach(DataRow dr in dtMailItem.Rows)
        {
           // Manipulation code for subject and body or remove the Mailitem from Datatable
        }
    }
}

如何保存Mailitem的对象或任何属性以确定保存了哪个Mailitem

Answer 1

您可以尝试使用this question中建议的方法来存储EntryIDand，稍后使用相同的ID检索它。