我已经能够检索到我检查过的最后一条消息之后的 UID 列表,因此我可以从IMAP服务器获取新消息:
using(var client = new ImapClient())
{
//client authentication code...
var inbox = client.Inbox;
inbox.Open(FolderAccess.ReadOnly);
//msgIdx contains the UID of the last message I've checked,
// so I can retrieve all the new messages after this one.
var range = new UniqueIdRange(new UniqueId((uint) msgIdx), UniqueId.MaxValue);
IList<UniqueId> uids = inbox.Search(range, SearchQuery.All);
foreach(var uid in uids)
{
//With the following instruction I download the whole message...
var message = inbox.GetMessage(uid);
LblMessageLog.Text += uid + " Subject:" + message.Subject + " []<br/>";
}
client.Disconnect(true);
}
问题在于我不想下载整个邮件,但只有特定的附件,因为我知道它将始终存在于所有邮件中。
MailKit网站上有一个例子,但它与我上面的搜索有冲突:
foreach (var summary in inbox.Fetch (0, -1, MessageSummaryItems.UniqueId | MessageSummaryItems.BodyStructure)) {
if (summary.Body is BodyPartMultipart) {
var multipart = (BodyPartMultipart) summary.Body;
var attachment = multipart.BodyParts.OfType<BodyPartBasic> ().FirstOrDefault (x => x.FileName == "cert.xml");
if (attachment != null) {
// this will download *just* the attachment
var part = inbox.GetBodyPart (summary.UniqueId, attachment);
}
}
}
如何在UID上执行过滤数据的两个流程,然后仅下载部分的电子邮件?
答案 0 :(得分:0)
这里是如何混合两者:
var range = new UniqueIdRange(new UniqueId((uint) msgIdx), UniqueId.MaxValue);
var items = inbox.Fetch(uids, MessageSummaryItems.UniqueId | MessageSummaryItems.Envelope);
foreach(var item in items)
{
LblMessage.Text += item.UniqueId + " Subject:" + item.Envelope.Subject + "<br/>";
}
Fetch方法有一个重载接受一个唯一ID的IList