Capturing Smtp related events

The Smtp class may publish one or more events during the lifetime of an Smtp session. Any object that subscribes to events published by the Smtp class can receive and process these events.

Capturing the ConnectedEvent event

The ConnectedEvent is published by the Smtp instance once a connection to the SMTP server has been established.

Example

This example shows you how you might subscribe to and process the ConnectedEvent event.

[C#]

mySmtp = new Smtp("hostname");

// Subscribe to event

mySmtp.ConnectedEvent += new Smtp.ConnectedEventHandler(OnConnected);

...

// invoke connect method

mySmtp.Connect();

// Define Connected Event handler

public void OnConnected(object sender, SmtpConnectedEventArgs e) {

 Console.WriteLine("Connected to {0}", e.Host);

}

[Visual Basic]

Public WithEvents mySmtp As Smtp

mySmtp = New Smtp("hostname");

...

' invoke connect method

mySmtp.Connect()

' Define Connected Event handler

Private Sub OnConnected( ByVal sender As Object, ByVal e As SmtpConnectedEventArgs) Handles mySmtp.ConnectedEvent

 Console.WriteLine("Connected to {0}", e.Host);

End Sub

Capturing the DisconnectedEvent event

The DisconnectedEvent is published by the Smtp instance once the connection to the SMTP server has been released.

Example

This example shows you how you might subscribe to and process the DisconnectedEvent event.

[C#]

mySmtp = new Smtp(hostname);

// Subscribe to event

mySmtp.DisconnectedEvent += new Smtp.DisconnectedEventHandler(OnDisconnected);

...

// invoke disconnect method

mySmtp.Disconnect();

// Define Disconnected Event handler

public void OnDisconnected(object sender, SmtpDisconnectedEventArgs e) {

 Console.WriteLine("Disconnected");

}

[Visual Basic]

Public WithEvents mySmtp As Smtp

mySmtp = New Smtp(hostname);

...

' invoke disconnect method

mySmtp.Disconnect()

' Define Disconnected Event handler

Private Sub OnDisconnected( ByVal sender As Object, ByVal e As SmtpDisconnectedEventArgs) Handles mySmtp.DisconnectedEvent

 Console.WriteLine("Disconnected");

End Sub

Capturing the CommandSentEvent event

The CommandSentEvent is published by the Smtp instance for each command sent to the SMTP server. Commands are sent to the SMTP server when the IssueCommand method or the Send method is invoked.

Example

This example displays the command sent to the Smtp server.

[C#]

mySmtp = new Smtp(hostname);

// Subscribe to event

mySmtp.CommandSentEvent += new Smtp.CommandSentEventHandler(OnCommandSent);

// Define CommandSent Event handler

public void OnCommandSent(object sender, SmtpCommandSentEventArgs e) {

 Console.WriteLine("Command: " + e.Command);

}

[Visual Basic]

Public WithEvents mySmtp As Smtp

mySmtp = New Smtp(hostname);

' Define CommandSent Event handler

Private Sub OnCommandSent( ByVal sender As Object, ByVal e As SmtpCommandSentEventArgs) Handles mySmtp.CommandSentEvent

 Console.WriteLine("Command: " & e.Command);

End Sub

Capturing the DataReceivedEvent event

The DataReceivedEvent is published by the Smtp instance for each response received from the SMTP server. SMTP server responses are recieved when each command is sent to the SMTP server.

Example

This example displays the Smtp server response when recieved.

[C#]

mySmtp = new Smtp(hostname);

// Subscribe to event

mySmtp.DataReceivedEvent += new Smtp.DataReceivedEventHandler(OnDataReceived);

// Define DataReceived Event handler

public void OnDataReceived(object sender, SmtpDataReceivedEventArgs e) {

 Console.WriteLine("Response: " + e.Response);

}

[Visual Basic]

Public WithEvents mySmtp As Smtp

mySmtp = New Smtp(hostname);

' Define DataReceived Event handler

Private Sub OnDataReceived( ByVal sender As Object, ByVal e As SmtpDataReceivedEventArgs) Handles mySmtp.DataReceivedEvent

 Console.WriteLine("Response: " & e.Response);

End Sub