using System;
    using System.Web.UI;

    namespace IpnEasyDemo
    {
    public partial class Default : Page
    {
    private Rolosoft.IpnEasy.Net.Ipn _ipnEasy;

    protected void Page_Load(object sender, EventArgs e)
    {
    _ipnEasy = new Rolosoft.IpnEasy.Net.Ipn();
    _ipnEasy.TransactionReceived += IpnEasyTransactionReceived;
    _ipnEasy.Validate();
    }

    private static void IpnEasyTransactionReceived(object sender, Rolosoft.IpnEasy.Net.PayPal.TransactionEventArgs e)
    {
    if (e.Transaction.Verification == Rolosoft.IpnEasy.Net.PayPal.Verification.VERIFIED)
    {
    //Do some further checks if necessary

    //Further processing, e.g. commit changes to your database
    }
    if (e.Transaction.Verification == Rolosoft.IpnEasy.Net.PayPal.Verification.INVALID)
    {
    //Flag this for further investigation.
    //DO NOT PROCESS THIS IPN AS IT MAY BE A FRAUDULANT TRANSACTION
    }
    }
    }
    }

Imports System.Web.UI

    Namespace IpnEasyDemo
    Public Partial Class [Default]
    Inherits Page
    Private _ipnEasy As Rolosoft.IpnEasy.Net.Ipn
    Protected Sub Page_Load(sender As Object, e As EventArgs)
    _ipnEasy = New Rolosoft.IpnEasy.Net.Ipn()
    AddHandler _ipnEasy.TransactionReceived, AddressOf IpnEasyTransactionReceived
    _ipnEasy.Validate()
    End Sub

    Private Shared Sub IpnEasyTransactionReceived(sender As Object, e As Rolosoft.IpnEasy.Net.PayPal.TransactionEventArgs)
    'Do some further checks if necessary
    'Further processing, e.g. commit changes to your database
    If e.Transaction.Verification = Rolosoft.IpnEasy.Net.PayPal.Verification.VERIFIED Then
    End If
    'Flag this for further investigation.
    'DO NOT PROCESS THIS IPN AS IT MAY BE A FRAUDULANT TRANSACTION
    If e.Transaction.Verification = Rolosoft.IpnEasy.Net.PayPal.Verification.INVALID Then
    End If
    End Sub
    End Class
    End Namespace