GetMessageInboxIndexCompleted Event

public event ExtendedAsyncCompletedEventHandler<TResult> GetMessageInboxIndexCompleted

Public Event GetMessageInboxIndexCompleted ExtendedAsyncCompletedEventHandler(Of TResult)

public:
 event ExtendedAsyncCompletedEventHandler<TResult>^ GetMessageInboxIndexCompleted

Shows how to connect to a POP3 server and get sequence number of 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");

// ... 
 
string uniqueId = "X0lgmxwop987311";

// Get sequence number 
int? inboxIndex = await client.GetMessageInboxIndexAsync(uniqueId);

// ... 
 
if (inboxIndex != null)
{
    Console.WriteLine("Found sequence number: " + inboxIndex.Value);
}

// 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")

' ... 
 
Dim uniqueId As String = "X0lgmxwop987311" 
 
' Get sequence number 
Dim inboxIndex As Nullable(Of Integer) = Await client.GetMessageInboxIndexAsync(uniqueId)

' ... 
 
If inboxIndex.HasValue Then 
    Console.WriteLine("Found sequence number: " & inboxIndex.Value)
End If 
 
' Disconnect.
client.Disconnect()

Shows how to connect to a POP3 server and get sequence number of a message asynchronously.

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

...

public void DoGetSequenceNumberAsync()
{
    // 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.GetMessageInboxIndexCompleted += client_GetSequenceNumberCompleted;

    string uniqueId = "X0lgmxwop987311";

    // Get sequence number 
    client.GetMessageInboxIndexAsync(uniqueId);

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

void client_GetSequenceNumberCompleted(object sender, ExtendedAsyncCompletedEventArgs<int?> e)
{
    // Pop3 client = (Pop3)sender; 
    if (e.Error != null)
    {
        Console.WriteLine("Error: " + e.Error.ToString());
    }
    else 
    {
        int? inboxIndex = e.Result;

        if (inboxIndex != null)
        {
            Console.WriteLine("Found sequence number: " + inboxIndex.Value);
        }
    }
}

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

...

Public Sub DoGetSequenceNumberAsync()
    ' 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.GetMessageInboxIndexCompleted, AddressOf client_GetSequenceNumberCompleted

    Dim uniqueId As String = "X0lgmxwop987311" 
 
    ' Get sequence number 
    client.GetMessageInboxIndexAsync(uniqueId)

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

        If inboxIndex.HasValue Then 
            Console.WriteLine("Found sequence number: " & inboxIndex.Value)
        End If 
    End If 
End Sub

Reference