如何使用 EWS 托管 API 按 ID 获取附件

本文关键字:ID 获取 API 何使用 EWS 托管 | 更新日期: 2023-09-27 17:55:37

是否可以直接使用 EWS 托管 API 获取附件,而无需先获取其包含的电子邮件?

像这样:

FileAttachment attach = FileAttachment.Bind(ewsService, attachId);

我找不到任何方法。

如何使用 EWS 托管 API 按 ID 获取附件

您可以使用

ExchangeService 类 https://msdn.microsoft.com/en-us/library/office/dn600509(v=exchg.80)的 GetAttachments 方法.aspx ,这允许您将一个或多个 GetAttachment 请求批处理在一起,例如:

     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");
            }
        }
    }