檢索一次使用EWS託管API 2.0

Question

，以便檢索電子郵件，我使用EWS從EWS附件，但是當我要檢索的附件我呼籲每個以下功能：

fileAttachment.Load(); 

每次我這樣做，它都會去服務器。是否有可能一次檢索所有附件？另外，是否有可能檢索幾個郵件的所有附件？

Answer 1

ExchangeService對象有一個GetAttachments方法，它基本上允許您執行批量GetAttachment請求。所以，如果你想一次你需要做這樣的事情（第一次調用loadpropertiesforitems這確實一批的GetItem得到AttachmentIds）

 FindItemsResults<Item> fItems = service.FindItems(WellKnownFolderName.Inbox,new ItemView(10)); 
     PropertySet psSet = new PropertySet(BasePropertySet.FirstClassProperties); 
     service.LoadPropertiesForItems(fItems.Items, psSet); 
     List<Attachment> atAttachmentsList = new List<Attachment>(); 
     foreach(Item ibItem in fItems.Items){ 
      foreach(Attachment at in ibItem.Attachments){ 
       atAttachmentsList.Add(at); 
      } 
     } 
     ServiceResponseCollection<GetAttachmentResponse> gaResponses = service.GetAttachments(atAttachmentsList.ToArray(), BodyType.HTML, null); 
     foreach (GetAttachmentResponse gaResp in gaResponses) 
     { 
      if (gaResp.Result == ServiceResult.Success) 
      { 
       if (gaResp.Attachment is FileAttachment) 
       { 
        Console.WriteLine("File Attachment"); 
       } 
       if (gaResp.Attachment is ItemAttachment) 
       { 
        Console.WriteLine("Item Attachment"); 
       } 
      } 
     } 

乾杯 格倫加載在幾個消息中的附件