ReadResponseCompleted Event

public event ExtendedAsyncCompletedEventHandler<TResult> ReadResponseCompleted

Public Event ReadResponseCompleted ExtendedAsyncCompletedEventHandler(Of TResult)

public:
 event ExtendedAsyncCompletedEventHandler<TResult>^ ReadResponseCompleted

Use the SendCommand and ReadResponse asynchronous methods to send command and read response (Task-based asynchronous approach).

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

...

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

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

// Or you can specify the IMAP port with 
// client.Connect("myserver", 143); 
 
// Login to the server.
client.Authenticate("user", "password");

// ... 
 
// Send 'HELP' command to the server. 
await client.SendCommandAsync("HELP", new object[] {});

// ...

ImapResponse response = await client.ReadResponseAsync();

// Print out the response.
Console.WriteLine(response.RawResponse);

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

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

...

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

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

' Or you can specify the IMAP port with 
' client.Connect("myserver", 143); 
 
' Login to the server.
client.Authenticate("user", "password")

' ... 
 
' Send 'HELP' command to the server. 
Await client.SendCommandAsync("HELP", New Object() {})

' ... 
 
Dim response As ImapResponse = Await client.ReadResponseAsync()

' Print out the response.
Console.WriteLine(response.RawResponse)

' ... 
 
' Disconnect.
client.Disconnect()

Shows how to use the SendCommand and ReadResponse asynchronous methods (Event-based asynchronous approach).

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

...

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

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

    // Or you can specify the IMAP port with 
    // client.Connect("myserver", 143); 
 
    // Login to the server. 
    client.Authenticate("user", "password");

    // ... 
 
    // Register an event handler. 
    client.SendCommandCompleted += client_SendCommandCompleted;
    client.ReadResponseCompleted += client_ReadResponseCompleted;

    // Send 'HELP' command to the server. 
    client.SendCommandAsync("HELP", new object[] { });

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

void client_ReadResponseCompleted(object sender, ExtendedAsyncCompletedEventArgs<ImapResponse> e)
{
    if (e.Error != null)
        Console.WriteLine("Error: " + e.Error.ToString());
    else 
        // Print out the response. 
        Console.WriteLine(e.Result.RawResponse);
}

void client_SendCommandCompleted(object sender, AsyncCompletedEventArgs e)
{
    if (e.Error != null)
        Console.WriteLine("Error: " + e.Error.ToString());
    else 
        // Asynchronously read response from the server. 
        ((Imap)sender).ReadResponseAsync();
}

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

...

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

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

    ' Or you can specify the IMAP port with 
    ' client.Connect("myserver", 143); 
 
    ' Login to the server. 
    client.Authenticate("user", "password")

    ' ... 
 
    ' Register an event handler. 
    AddHandler client.SendCommandCompleted, AddressOf client_SendCommandCompleted
    AddHandler client.ReadResponseCompleted, AddressOf client_ReadResponseCompleted

    ' Send 'HELP' command to the server. 
    client.SendCommandAsync("HELP", New Object() { })

    ' ... 
 
    ' Disconnect. 
    client.Disconnect()
End Sub 
 
Private Sub client_ReadResponseCompleted(ByVal sender As Object, ByVal e As ExtendedAsyncCompletedEventArgs(Of ImapResponse))
    If e.Error IsNot Nothing Then 
        Console.WriteLine("Error: " & e.Error.ToString())
    Else 
        ' Print out the response. 
        Console.WriteLine(e.Result.RawResponse)
    End If 
End Sub 
 
Private Sub client_SendCommandCompleted(ByVal sender As Object, ByVal e As AsyncCompletedEventArgs)
    If e.Error IsNot Nothing Then 
        Console.WriteLine("Error: " & e.Error.ToString())
    Else 
        ' Asynchronously read response from the server. 
        CType(sender, Imap).ReadResponseAsync()
    End If 
End Sub

Reference