public void Verify(
	DataTable emails,
	string columnName
)

Public Sub Verify ( 
	emails As DataTable,
	columnName As String
)

using System;
using System.IO;
using System.Data;
using MailBee;
using MailBee.AddressCheck;

class Program
{
    private static object syncObject = new object();
    private static StreamWriter sw;

    // This method will be executed for each e-mail address in the bulk,
    // whenever it gets verified, with either positive or negative result.
    private static void valid_Verified(object sender, VerifiedEventArgs e)
    {
        Console.WriteLine("*** Verified ***");
        Console.WriteLine("Email: " + e.Email);
        Console.WriteLine("Result: " + e.Result.ToString());
        if (e.Reason != null)
        {
            Console.WriteLine("Reason: " + e.Reason.Message);
        }
        Console.WriteLine();

        try
        {
            // This lock guarantees only one thread at a time will execute the guarded section.
            lock (syncObject)
            {
                sw.WriteLine(string.Format("{0}={1}", e.Email, e.Result.ToString()));
            }
        }
        catch (Exception ex)
        {
            // This is also important. In multi-threaded mode, crashing due to an exception simply
            // closes the worker thread and you may never know what really happened. Thus, it's recommended
            // (at least in debug) to catch all exceptions there and print them out (such as to Console).
            Console.WriteLine(ex.ToString());
        }
    }

    static void Main(string[] args)
    {
        EmailAddressValidator valid = new EmailAddressValidator("MN110-0123456789ABCDEF-0123");

        // To perform DNS MX lookup queries, we need some DNS servers for that.
        valid.DnsServers.Autodetect();

        // Logging into a file is not required for the component to work
        // but helpful for debugging and understanding things under the hood.
        // Since this sample is multi-threaded, we also set AddContextInfo option
        // to make it easier analyze the log (each record will be tagged with a thread ID).
        valid.Log.Enabled = true;
        valid.Log.Format = LogFormatOptions.AddContextInfo;
        valid.Log.Filename = @"C:\Temp\log.txt";
        valid.Log.Clear();

        // Subscribe to event.
        valid.Verified += new VerifiedEventHandler(valid_Verified);

        // In this sample, we'll build DataTable manually from a string array.
        string[] emails = new string[10];
        for (int i = 0; i < emails.Length; i++)
        {
            // Make user0@domain0.com, user1@domain1.com, ..., user9@domain9.com.
            emails[i] = string.Format("user{0}@domain{0}.com", i.ToString());
        }

        // In real apps, you'll get data from database. For now, populate data from
        // string array by putting all the data into a table with one column "email".
        DataTable data = valid.ArrayToDataTable(emails);

        // Enable as many threads as possible.
        valid.MaxThreadCount = -1;

        using (sw = new StreamWriter(@"C:\Temp\report.txt"))
        {
            // Run the verification in multi-threaded mode.
            valid.Verify(data, "email");
        }
    }
}

Imports System.IO
Imports System.Data
Imports MailBee
Imports MailBee.AddressCheck

Class Program
    Private Shared syncObject As New Object()
    Private Shared sw As StreamWriter

    ' This method will be executed for each e-mail address in the bulk,
    ' whenever it gets verified, with either positive or negative result.
    Private Shared Sub valid_Verified(sender As Object, e As VerifiedEventArgs)
        Console.WriteLine("*** Verified ***")
        Console.WriteLine("Email: " & e.Email)
        Console.WriteLine("Result: " & e.Result.ToString())
        If Not (e.Reason Is Nothing) Then
            Console.WriteLine("Reason: " & e.Reason.Message)
        End If
        Console.WriteLine()

        Try
            ' This lock guarantees only one thread at a time will execute the guarded section.
            SyncLock syncObject
                sw.WriteLine(String.Format("{0}={1}", e.Email, e.Result.ToString()))
            End SyncLock
        Catch ex As Exception
            ' This is also important. In multi-threaded mode, crashing due to an exception simply
            ' closes the worker thread and you may never know what really happened. Thus, it's recommended
            ' (at least in debug) to catch all exceptions there and print them out (such as to Console).
            Console.WriteLine(ex.ToString())
        End Try
    End Sub

    Shared Sub Main(args As String())
        Dim valid As New EmailAddressValidator("MN110-0123456789ABCDEF-0123")

        ' To perform DNS MX lookup queries, we need some DNS servers for that.
        valid.DnsServers.Autodetect()

        ' Logging into a file is not required for the component to work
        ' but helpful for debugging and understanding things under the hood.
        ' Since this sample is multi-threaded, we also set AddContextInfo option
        ' to make it easier analyze the log (each record will be tagged with a thread ID).
        valid.Log.Enabled = True
        valid.Log.Format = LogFormatOptions.AddContextInfo
        valid.Log.Filename = "C:\Temp\log.txt"
        valid.Log.Clear()

        ' Subscribe to event.
        AddHandler valid.Verified, AddressOf valid_Verified

        ' In this sample, we'll build DataTable manually from a string array.
        Dim emails As String() = New String(9) {}
        For i As Integer = 0 To emails.Length - 1
            ' Make user0@domain0.com, user1@domain1.com, ..., user9@domain9.com.
            emails(i) = String.Format("user{0}@domain{0}.com", i.ToString())
        Next

        ' In real apps, you'll get data from database. For now, populate data from
        ' string array by putting all the data into a table with one column "email".
        Dim data As DataTable = valid.ArrayToDataTable(emails)

        ' Enable as many threads as possible.
        valid.MaxThreadCount = -1

        sw = New StreamWriter("C:\Temp\report.txt")
        Try
            ' Run the verification in multi-threaded mode.
            valid.Verify(data, "email")
        Finally
            sw.Close
        End Try
    End Sub
End Class