public event DataTransferEventHandler LowLevelDataReceived

Public Event LowLevelDataReceived As DataTransferEventHandler

using System;
using MailBee;
using MailBee.ImapMail;
using MailBee.Mime;

class Sample
{
    // Total bytes received counter.
    private static int _totalBytes = 0;

    // LowLevelDataReceived event handler.
    private static void OnLowLevelDataReceived(object sender, DataTransferEventArgs e)
    {
        // Increment the counter.
        _totalBytes += e.Data.Length;
    }

    // The actual code.
    static void Main(string[] args)
    {
        Imap imp = new Imap();

        // Subscribe to the LowLevelDataReceived event.
        imp.LowLevelDataReceived += new DataTransferEventHandler(OnLowLevelDataReceived);

        // Do something which would produce some network traffic.
        imp.Connect("mail.domain.com");
        imp.Login("jdoe", "secret");
        imp.SelectFolder("Inbox");
        MailMessageCollection msgs = imp.DownloadMessageHeaders(Imap.AllMessages, false);
        imp.Disconnect();

        // Print the total number of bytes previously received from the server.
        Console.WriteLine(_totalBytes + " bytes received in all");
    }
}

Imports System
Imports MailBee
Imports MailBee.ImapMail
Imports MailBee.Mime

Module Sample
    ' Total bytes received counter.
    Dim _totalBytes As Integer = 0

    ' LowLevelDataReceived event handler.
    Private Sub OnLowLevelDataReceived(ByVal sender As Object, ByVal e As DataTransferEventArgs)
        ' Increment the counter.
        _totalBytes += e.Data.Length
    End Sub

    ' The actual code.
    Sub Main(ByVal args As String())
        Dim imp As New Imap

        ' Subscribe to the LowLevelDataReceived event.
        AddHandler imp.LowLevelDataReceived, AddressOf OnLowLevelDataReceived

        ' Do something which would produce some network traffic.
        imp.Connect("mail.domain.com")
        imp.Login("jdoe", "secret")
        imp.SelectFolder("Inbox")
        Dim msgs As MailMessageCollection = imp.DownloadMessageHeaders(Imap.AllMessages, False)
        imp.Disconnect()

        ' Print the total number of bytes previously received from the server.
        Console.WriteLine(_totalBytes & " bytes received in all")
    End Sub
End Module