我按照 MSDN 上的 EWS 托管 API 示例查找我的 Exchange 邮箱帐户中的所有未读电子邮件。
后来,我检查了每个找到的项目,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并将每个消息更新为
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。