DownloadMailMessageCompleted Event

public event ExtendedAsyncCompletedEventHandler<TResult> DownloadMailMessageCompleted

Public Event DownloadMailMessageCompleted ExtendedAsyncCompletedEventHandler(Of TResult)

public:
 event ExtendedAsyncCompletedEventHandler<TResult>^ DownloadMailMessageCompleted

Shows how to connect to a POP3 server and download a message asynchronously.

using System;
using System.ComponentModel;
using ComponentPro;
using ComponentPro.Net.Mail;

...

// Create a new instance of the Pop3 class.
Pop3 client = new Pop3();

// Connect to the server.
client.Connect("myserver");

// Or you can specify the POP3 port with 
// client.Connect("myserver", 110); 
 
// Login to the server.
client.Authenticate("user", "password");

// ... 
 
// Download a mail message with sequence number 1.
MailMessage msg = await client.DownloadMailMessageAsync(1);

// ...
Console.WriteLine("Message downloaded successfully.");
Console.WriteLine("Message ID: {0}, Subject: {1}", msg.MessageIdentifier, msg.Subject);

// Disconnect.
client.Disconnect();

Imports System.ComponentModel
Imports ComponentPro
Imports ComponentPro.Net.Mail

...

' Create a new instance of the Pop3 class. 
Dim client As New Pop3()

' Connect to the server.
client.Connect("myserver")

' Or you can specify the POP3 port with 
' client.Connect("myserver", 110); 
 
' Login to the server.
client.Authenticate("user", "password")

' ... 
 
' Download a mail message with sequence number 1. 
Dim msg As MailMessage = Await client.DownloadMailMessageAsync(1)

' ...
Console.WriteLine("Message downloaded successfully.")
Console.WriteLine("Message ID: {0}, Subject: {1}", msg.MessageIdentifier, msg.Subject)

' Disconnect.
client.Disconnect()

Shows how to connect to a POP3 server and download a message asynchronously.

using System;
using System.ComponentModel;
using ComponentPro;
using ComponentPro.Net.Mail;

...

public void DoDownloadMailMessageAsync()
{
    // Create a new instance of the Pop3 class. 
    Pop3 client = new Pop3();

    // Connect to the server. 
    client.Connect("myserver");

    // Or you can specify the POP3 port with 
    // client.Connect("myserver", 110); 
 
    // Login to the server. 
    client.Authenticate("user", "password");

    // ... 
 
    // Register an event handler. 
    client.DownloadMailMessageCompleted += client_DownloadMailMessageCompleted;

    // Download a mail message with sequence number 1. 
    client.DownloadMailMessageAsync(1);

    // ... 
 
    // Disconnect. 
    client.Disconnect();
}

void client_DownloadMailMessageCompleted(object sender, ExtendedAsyncCompletedEventArgs<MailMessage> e)
{
    // Pop3 client = (Pop3)sender; 
    if (e.Error != null)
        Console.WriteLine("Error: " + e.Error.ToString());
    else 
    {
        MailMessage msg = e.Result;

        Console.WriteLine("Message downloaded successfully.");
        Console.WriteLine("Message ID: {0}, Subject: {1}", msg.MessageIdentifier, msg.Subject);
    }
}

Imports System.ComponentModel
Imports ComponentPro
Imports ComponentPro.Net.Mail

...

Public Sub DoDownloadMailMessageAsync()
    ' Create a new instance of the Pop3 class. 
    Dim client As New Pop3()

    ' Connect to the server. 
    client.Connect("myserver")

    ' Or you can specify the POP3 port with 
    ' client.Connect("myserver", 110); 
 
    ' Login to the server. 
    client.Authenticate("user", "password")

    ' ... 
 
    ' Register an event handler. 
    AddHandler client.DownloadMailMessageCompleted, AddressOf client_DownloadMailMessageCompleted

    ' Download a mail message with sequence number 1. 
    client.DownloadMailMessageAsync(1)

    ' ... 
 
    ' Disconnect. 
    client.Disconnect()
End Sub 
 
Private Sub client_DownloadMailMessageCompleted(ByVal sender As Object, ByVal e As ExtendedAsyncCompletedEventArgs(Of MailMessage))
    ' Pop3 client = (Pop3)sender; 
    If e.Error IsNot Nothing Then 
        Console.WriteLine("Error: " & e.Error.ToString())
    Else 
        Dim msg As MailMessage = e.Result

        Console.WriteLine("Message downloaded successfully.")
        Console.WriteLine("Message ID: {0}, Subject: {1}", msg.MessageIdentifier, msg.Subject)
    End If 
End Sub

Reference