public event DataTransferEventHandler LowLevelDataReceived

Public Event LowLevelDataReceived As DataTransferEventHandler

using System;
using MailBee;
using MailBee.Pop3Mail;
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)
    {
        Pop3 pop = new Pop3();

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

        // Do something which would produce some network traffic.
        pop.Connect("mail.domain.com");
        pop.Login("jdoe", "secret");
        MailMessageCollection msgs = pop.DownloadMessageHeaders();
        pop.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.Pop3Mail
Imports MailBee.Mime

Class Sample
    ' Total bytes received counter.
    Private Shared _totalBytes = 0

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

    ' The actual code.
    Shared Sub Main(ByVal args As String())
        Dim pop As New Pop3

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

        ' Do something which would produce some network traffic.
        pop.Connect("pop.somehost.com")
        pop.Login("jdoe", "secret")

        Dim msgs As MailMessageCollection
        msgs = pop.DownloadMessageHeaders()
        pop.Disconnect()

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