如何在一次更新中将通过 EWS 获取的所有电子邮件标记为已读？

Question

我遵循 MSDN 上的 EWS Managed API 示例 find all unread email in my Exchange mailbox account。

我后来遍历了每个找到的项目，以便将它们放入我需要的列表中return，同时获取每条消息的正文并将每个更新为 IsRead=true，如下所示：

Folder.Bind(Service, WellKnownFolderName.Inbox);

SearchFilter sf = new SearchFilter.SearchFilterCollection(LogicalOperator.And,
    new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, false));
//ItemView limits the results to numOfMails2Fetch items
FindItemsResults<Item> foundItems = Service.FindItems(WellKnownFolderName.Inbox, sf,
    new ItemView(numOfMails2Fetch));

if (foundItems.TotalCount > 0)
{
    List<EmailMessage> emailsList = new List<EmailMessage>(foundItems.TotalCount);
    foundItems.Items.ToList().ForEach(item =>
    {
        var iEM = item as EmailMessage;
        emailsList.Add(iEM);
        // update properties
        iEM.IsRead = true;
        iEM.Update(ConflictResolutionMode.AutoResolve);
    });
    // fetches and assign the bodies of each email
    Service.LoadPropertiesForItems(emailsList,PropertySet.FirstClassProperties);
    return emailsList;
} else return null;

是否可以在单个请求中将所有找到的项目更新为 IsRead=true？ IE。无需一一更新 = 更好的性能和连贯的逻辑。

Answer 1

是的，你可以。 ExchangeService.UpdateItems 是您要在此处使用的方法。有关详细信息，请参阅 How to: Process email messages in batches by using EWS in Exchange。

如何在一次更新中将通过 EWS 获取的所有电子邮件标记为已读？

How can I mark as read all emails fetched through EWS in a single update?

c#

email

managed

exchangewebservices