ConnectCompleted Event

public event ExtendedAsyncCompletedEventHandler<TResult> ConnectCompleted

Public Event ConnectCompleted ExtendedAsyncCompletedEventHandler(Of TResult)

public:
 event ExtendedAsyncCompletedEventHandler<TResult>^ ConnectCompleted

Show how to asynchronously connect to an SMTP server, compose an email and send it.

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

...

// Create a new instance.
Smtp client = new Smtp();

// Connect to the SMTP server asynchronously. 
await client.ConnectAsync("myserver");

// Or you can specify the SMTP port with 
// await client.ConnectAsync("myserver", 25); 
 
// Authenticate the user asynchronously. 
await client.AuthenticateAsync("userName", "password");

// Create a new mail message.
MailMessage msg = new MailMessage();
msg.Subject = "Test Subject";
msg.BodyText = "Content";
msg.From = "from@mydomain.com";
msg.To = "to@somedomain.com";

// And send it.
client.Send(msg);

// ... 
 
// Disconnect asynchronously.
client.DisconnectAsync();

// ...

Imports ComponentPro.Net.Mail
Imports ComponentPro

...

' Create a new instance. 
Dim client As New Smtp()

' Connect to the SMTP server asynchronously. 
Await client.ConnectAsync("myserver")

' Or you can specify the SMTP port with 
' Await client.ConnectAsync("myserver", 25); 
 
' Authenticate the user asynchronously. 
Await client.AuthenticateAsync("userName", "password")

' Create a new mail message. 
Dim msg As New MailMessage()
msg.Subject = "Test Subject"
msg.BodyText = "Content"
msg.From = "from@mydomain.com"
msg.To = "to@somedomain.com" 
 
' And send it.
client.Send(msg)

' ... 
 
' Disconnect asynchronously.
client.DisconnectAsync()

' ...

Show how to asynchronously connect to an SMTP server, compose an email and send it.

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

...

public void DoAsyncConnect()
{
    // Create a new instance. 
    Smtp client = new Smtp();

    client.ConnectCompleted += client_ConnectCompleted;
    client.AuthenticateCompleted += client_AuthenticateCompleted;
    client.DisconnectCompleted += client_DisconnectCompleted;

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

    // Or you can specify the SMTP port with 
    // client.ConnectAsync("myserver", 25); 
 
    // Your code here 
    // ...
}

void client_ConnectCompleted(object sender, ExtendedAsyncCompletedEventArgs<string> e)
{
    Smtp client = (Smtp)sender;
    if (e.Error != null)
    {
        Console.WriteLine("Error: " + e.Error.ToString());
        return;
    }
    
    // Authenticate the user asynchronously. 
    client.AuthenticateAsync("userName", "password");
}

void client_AuthenticateCompleted(object sender, AsyncCompletedEventArgs e)
{
    Smtp client = (Smtp)sender;
    if (e.Error != null)
    {
        Console.WriteLine("Error: " + e.Error.ToString());
        return;
    }

    // Create a new mail message. 
    MailMessage msg = new MailMessage();
    msg.Subject = "Test Subject";
    msg.BodyText = "Content";
    msg.From = "from@mydomain.com";
    msg.To = "to@somedomain.com";

    // And send it. 
    client.Send(msg);

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

void client_DisconnectCompleted(object sender, ExtendedAsyncCompletedEventArgs<string> e)
{
    if (e.Error != null)
    {
        Console.WriteLine("Error: " + e.Error.ToString());
    }
}

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

...

Public Sub DoAsyncConnect()
    ' Create a new instance. 
    Dim client As New Smtp()

    AddHandler client.ConnectCompleted, AddressOf client_ConnectCompleted
    AddHandler client.AuthenticateCompleted, AddressOf client_AuthenticateCompleted
    AddHandler client.DisconnectCompleted, AddressOf client_DisconnectCompleted

    ' Connect to the SMTP server asynchronously. 
    client.ConnectAsync("myserver")

    ' Or you can specify the SMTP port with 
    ' client.ConnectAsync("myserver", 25); 
 
    ' Your code here 
    ' ... 
End Sub 
 
Private Sub client_ConnectCompleted(ByVal sender As Object, ByVal e As ExtendedAsyncCompletedEventArgs(Of String))
    Dim client As Smtp = CType(sender, Smtp)
    If e.Error IsNot Nothing Then 
        Console.WriteLine("Error: " & e.Error.ToString())
        Return 
    End If 
 
    ' Authenticate the user asynchronously. 
    client.AuthenticateAsync("userName", "password")
End Sub 
 
Private Sub client_AuthenticateCompleted(ByVal sender As Object, ByVal e As AsyncCompletedEventArgs)
    Dim client As Smtp = CType(sender, Smtp)
    If e.Error IsNot Nothing Then 
        Console.WriteLine("Error: " & e.Error.ToString())
        Return 
    End If 
 
    ' Create a new mail message. 
    Dim msg As New MailMessage()
    msg.Subject = "Test Subject" 
    msg.BodyText = "Content" 
    msg.From = "from@mydomain.com" 
    msg.To = "to@somedomain.com" 
 
    ' And send it. 
    client.Send(msg)

    ' ... 
 
    ' Disconnect asynchronously. 
    client.DisconnectAsync()
End Sub 
 
Private Sub client_DisconnectCompleted(ByVal sender As Object, ByVal e As ExtendedAsyncCompletedEventArgs(Of String))
    If e.Error IsNot Nothing Then 
        Console.WriteLine("Error: " & e.Error.ToString())
    End If 
End Sub

Reference