public event DisconnectedEventHandler Disconnected

Public Event Disconnected As DisconnectedEventHandler

using System;
using MailBee;
using MailBee.Pop3Mail;

class Sample
{
    // Disconnected event handler.
    private static void OnDisconnected(object sender, DisconnectedEventArgs e)
    {
        if (e.IsNormalShutdown)
        {
            // QUIT command was sent to POP3 server.
            Console.WriteLine("Normally disconnected from the server.");
        }
        else
        {
            // Rough disconnect (due to failure). If any messages have been 
            // flagged for deletion, they will possibly not be deleted.
            Console.WriteLine("The connection was terminated.");
        }
    }

    // The actual code.
    static void Main(string[] args)
    {
        Pop3 pop = new Pop3();

        // Subscribe to Disconnected event.
        pop.Disconnected += new DisconnectedEventHandler(OnDisconnected);

        pop.Connect("mail.domain.com");

        // We do not want to wait too long. Set one second as timeout value.
        pop.Timeout = 1000;

        // Simulate connection error by sending a request to which the POP3
        // server will never respond (due to a lack of "\r\n" in the request data).
        // This will cause MailBee to terminate the connection and raise 
        // Disconnected event, and then throw MailBeeException (exceptions are 
        // enabled by default).
        pop.ExecuteCustomCommand("NONSENSE", false);

        // This line will probably never execute (unless the server 
        // suddenly responds to NONSENSE sequence of bytes).
        pop.Disconnect();
    }
}

Imports System
Imports MailBee
Imports MailBee.Pop3Mail

Class Sample
    ' Disconnected event handler.
    Private Shared Sub OnDisconnected(ByVal sender As Object, ByVal e As DisconnectedEventArgs)
        If e.IsNormalShutdown Then
            ' QUIT command was sent to POP3 server.
            Console.WriteLine("Normally disconnected from the server.")
        Else
            ' Rough disconnect (due to failure). If any messages have been 
            ' flagged for deletion, they will possibly not be deleted.
            Console.WriteLine("The connection was terminated.")
        End If
    End Sub

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

        ' Subscribe to the LoggedIn event.
        AddHandler pop.Disconnected, AddressOf OnDisconnected

        pop.Connect("mail.domain.com")

        ' We do not want to wait too long. Set one second as timeout value.
        pop.Timeout = 1000

        ' Simulate connection error by sending a request to which the POP3 
        ' server will never respond (due to a lack of "\r\n" in the request data).
        ' This will cause MailBee to terminate the connection and raise 
        ' Disconnected event, and then throw MailBeeException (exceptions are 
        ' enabled by default).
        pop.ExecuteCustomCommand("NONSENSE", False)

        ' This line will probably never execute (unless the server 
        ' suddenly responds to NONSENSE sequence of bytes).
        pop.Disconnect()
    End Sub
End Class