我可以使用pop3client仅下载最新消息，例如仅下载5条最新消息吗？

Question

Now it's downloading all the messages and i have a lot of them on the server of my internet account. Then after i'm downloading all the messages it will download only the newest messages. But i wonder if i wanted on the first time instead of downloading all the messages to download only the newest 5 messages only ? Or the newest 100 messages only ? And not all the messages on the server.

using (var client = new Pop3Client())
                {
                    client.Connect(textServer.Text, Convert.ToInt32(textPort.Text), ssl);
                    client.AuthenticationMechanisms.Remove("XOAUTH2");
                    client.Authenticate(textUser.Text, textPassword.Text);

                    var uids = client.GetMessageUids();

                    for (int i = 0; i < client.Count; i++)
                    {
                        if (backgroundWorker1.CancellationPending)
                        {
                            e.Cancel = true;
                            return;
                        }
                        if (!downloaded.Contains(uids[i]))
                        {
                            allMessages.Add(client.GetMessage(i));
                            newmsg = client.GetMessage(i);
                            downloaded.Add(uids[i]);
                            SaveFullMessage(client.GetMessage(i), i);
                            w = new StreamWriter(emailsIDSFile, true);
                            w.WriteLine(uids[i]);
                            w.Close();
                        }

                        int nProgress = (client.Count - i + 1) * 100 / client.Count;
                        backgroundWorker1.ReportProgress(nProgress,newmsg);//, client.Count.ToString() + "/" + i);
                        newmsg = null;
                    }

                    client.Disconnect(true);
                }

I'm getting a List of all the messages Uids:

var uids = client.GetMessageUids();

And i wonder if i could somehow to do something like in logical: Download only the newest 5 Uids messages or the newest 100 Uids messages. I wonder how and if i can select from the Uids List only the newest 5 or 100 messages to be downloaded.

I don't need and don't care for now about all the messages on the server i want to check only for the N newest messages for example 5 or 100 newest messages.

Answer 1

Instead of calling GetMessageUids, call GetMessageUid multiple times with an increasing message number each time.

See [ http://hpop.sourceforge.net/documentation/OpenPop~OpenPop.Pop3.Pop3Client.GetMessageUid.html]