如何在最近的N個Outlook.Items上應用過濾器並在過濾後獲取Outlook.Items？

Question

我想使用下面的代碼來過濾掉未讀的outlook郵件，但是我想對最近的N個Outlook.Items.App應用這個限制，但是我找不到任何這樣的方法。

Outlook.Explorer currExplorer = null; 
Outlook.Folder currFolder = null; 
Outlook.Items folderItems = null; 
Outlook.Items restrictedItems = null; 
Outlook.MailItem mail = null; 
Outlook.Attachments attachments = null; 
int attachmentCount = 0; 

try 
{ 

    currExplorer = OutlookApp.ActiveExplorer(); 
    currFolder = currExplorer.CurrentFolder as Outlook.Folder; 
    if (currFolder.DefaultItemType == Outlook.OlItemType.olMailItem) 
    { 
     folderItems = currFolder.Items; 
     restrictedItems = folderItems.Restrict("[Unread]=true"); 


     for (int i = 1; i <= restrictedItems.Count; i++) 
     { 
      mail = restrictedItems[i] as Outlook.MailItem; 
      if (mail != null) 
      { 
       attachments = mail.Attachments; 
       attachmentCount += attachments.Count; 
       Marshal.ReleaseComObject(attachments); 
       Marshal.ReleaseComObject(mail); 
      } 
     } 

    } 

} 

Answer 1

您需要使用Restrict方法兩次 - 第一次爲獲得最近的N項和第二爲讓他們之間的未讀條目。沒有查詢獲​​取集合中的N個項目，但您可以使用時間和時間範圍來過濾項目，有關更多信息，請參閱Enumerating, Searching, and Filtering Items in a Folder。

您可能會發現下面的文章有幫助：

• How To: Use Restrict method to retrieve Outlook mail items from a folder
• How To: Use Find and FindNext methods to retrieve Outlook mail items from a folder (C#, VB.NET)