Progress Event

public event EventHandler<TEventArgs> Progress

Public Event Progress EventHandler(Of TEventArgs)

public:
 event EventHandler<TEventArgs>^ Progress

Remarks

Shows how to handle the Progress event.

using System;
using ComponentPro.Net.Mail;

...

static void Main()
{
    try 
    {
        // Create a new instance of the BounceInspector class. 
        BounceInspector inspector = new BounceInspector();

        // Register an event handler. 
        inspector.Progress += inspector_Progress;

        // Process all EML files in directory 'c:\\temp'. 
        BounceResultCollection result = inspector.ProcessMessages("c:\\temp");

        // Display processed emails. 
        foreach (BounceResult r in result)
        {
            // If this message was identified as a bounced email message. 
            if (r.Identified)
            {
                // Print out the result 
                Console.Write("FileName: {0}\nSubject: {1}\nAddress: {2}\nBounce Category: {3}\nBounce Type: {4}\nDeleted: {5}\nDSN Action: {6}\nDSN Diagnostic Code: {7}\n\n",
                                System.IO.Path.GetFileName(r.FilePath),
                                r.MailMessage.Subject,
                                r.Addresses[0],
                                r.BounceCategory.Name,
                                r.BounceType.Name,
                                r.FileDeleted,
                                r.Dsn.Action,
                                r.Dsn.DiagnosticCode);
            }
        }

        Console.WriteLine("{0} bounced message found", result.BounceCount);
    }
    catch (Exception exc)
    {
        Console.WriteLine(string.Format("An error occurred: {0}", exc.Message));
    }
}

/// <summary> 
/// Handles the BounceInspector's Progress event. 
/// </summary> 
/// <param name="sender">The BounceInspector object.</param> 
/// <param name="e">The event arguments.</param> 
static void inspector_Progress(object sender, ProgressEventArgs e)
{
    Console.WriteLine("{0}/{1} message(s) processed, {2}% completed", e.Current, e.Total, e.Percentage);
}

Imports ComponentPro.Net.Mail

...

Shared Sub Main()
    Try 
        ' Create a new instance of the BounceInspector class. 
        Dim inspector As New BounceInspector()

        ' Register an event handler. 
        AddHandler inspector.Progress, AddressOf inspector_Progress

        ' Process all EML files in directory 'c:\\temp'. 
        Dim result As BounceResultCollection = inspector.ProcessMessages("c:\temp")

        ' Display processed emails. 
        For Each r As BounceResult In result
            ' If this message was identified as a bounced email message. 
            If r.Identified Then 
                ' Print out the result 
                Console.Write("FileName: {0}" & vbLf & "Subject: {1}" & vbLf & "Address: {2}" & vbLf & "Bounce Category: {3}" & vbLf & "Bounce Type: {4}" & vbLf & "Deleted: {5}" & vbLf & "DSN Action: {6}" & vbLf & "DSN Diagnostic Code: {7}" & vbLf & vbLf, System.IO.Path.GetFileName(r.FilePath), r.MailMessage.Subject, r.Addresses(0), r.BounceCategory.Name, r.BounceType.Name, r.FileDeleted, r.Dsn.Action, r.Dsn.DiagnosticCode)
            End If 
        Next r

        Console.WriteLine("{0} bounced message found", result.BounceCount)
    Catch exc As Exception
        Console.WriteLine(String.Format("An error occurred: {0}", exc.Message))
    End Try 
End Sub 
 
''' <summary> 
''' Handles the BounceInspector's Progress event. 
''' </summary> 
''' <param name="sender">The BounceInspector object.</param> 
''' <param name="e">The event arguments.</param> 
Private Shared Sub inspector_Progress(ByVal sender As Object, ByVal e As ProgressEventArgs)
    Console.WriteLine("{0}/{1} message(s) processed, {2}% completed", e.Current, e.Total, e.Percentage)
End Sub

Reference