public event DisconnectedEventHandler Disconnected

Public Event Disconnected As DisconnectedEventHandler

using System;
using MailBee;
using MailBee.SmtpMail;

class Sample
{
    // Disconnected event handler.
    private static void OnDisconnected(object sender, DisconnectedEventArgs e)
    {
        if (e.IsNormalShutdown)
        {
            // QUIT command was sent to SMTP server.
            Console.WriteLine("Normally disconnected from the server.");
        }
        else
        {
            // Rough disconnect (due to failure).
            Console.WriteLine("The connection was terminated.");
        }
    }

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

        // Specify SMTP server name and timeout value.
        SmtpServer server = new SmtpServer("smtp.company.com");

        // We do not want to wait for MailBeeException too long.
        // Set 5 seconds as timeout value.
        // We cannot set it too small because otherwise even Connect() method 
        // would not have a time to connect to the server. Unlike POP3, it's 
        // not possible change timeout setting after the connection has already 
        // been established.
        server.Timeout = 5000;

        mailer.SmtpServers.Add(server);

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

        // Connect to the server first.
        mailer.Connect();

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

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

Imports System
Imports MailBee
Imports MailBee.SmtpMail

Class Sample
    ' Connected event handler.
    Private Shared Sub OnDisconnected(ByVal sender As Object, ByVal e As DisconnectedEventArgs)
        If e.IsNormalShutdown Then
            ' QUIT command was sent to SMTP server.
            Console.WriteLine("Normally disconnected from the server.")
        Else
            ' Rough disconnect (due to failure).
            Console.WriteLine("The connection was terminated.")
        End If
    End Sub

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

        ' Specify SMTP server name and timeout value.
        Dim server As New SmtpServer("smtp.company.com")

        ' We do not want to wait for MailBeeException too long.
        ' Set 5 seconds as timeout value.
        ' We cannot set it too small because otherwise even Connect() method 
        ' would not have a time to connect to the server. Unlike POP3, it's 
        ' not possible change timeout setting after the connection has already 
        ' been established.
        server.Timeout = 5000

        mailer.SmtpServers.Add(server)

        ' Subscribe to the Disconnected event.
        AddHandler mailer.Disconnected, AddressOf OnDisconnected

        ' Connect to the server first.
        mailer.Connect()

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

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