如何在单次更新中标记为读取通过EWS获取的所有电子邮件？

Question

我按照MSDN上的EWS托管API示例在我的Exchange邮箱帐户中查找所有未读电子邮件.

我后来浏览了每个找到的项目,以便将它们放入我需要返回的列表中,同时获取每条消息的正文IsRead=true并按如下方式更新每个消息:

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IsRead=true在一个请求中更新所有找到的项目？即不逐一更新它们=更好的性能和连贯的逻辑.

Answer 1

是的你可以.ExchangeService.UpdateItems是你想在这里使用的方法.请参见如何:使用Exchange中的EWS批量处理电子邮件以获取详细信息.