public class IntelligentMailGenerator :
    BarCode2DGenerator

Public Class IntelligentMailGenerator
    Inherits BarCode2DGenerator

using System;
using System.Collections.Generic;
using System.Drawing.Printing;
using System.Windows.Forms;
using DevExpress.XtraPrinting.BarCode;
using DevExpress.XtraReports.UI;
// ...
public XRBarCode CreateIntelligentMailBarCode(string BarCodeText) {
    // Create a barcode control.
    XRBarCode barCode = new XRBarCode();

    // Set the barcode's type to Intelligent Mail.
    barCode.Symbology = new IntelligentMailGenerator();

    // Adjust the barcode's main properties.
    barCode.Text = BarCodeText;
    barCode.ShowText = true;
    barCode.WidthF = 300f;
    barCode.HeightF = 50f;

    // If the AutoModule property is set to false, uncomment the next line.
    barCode.AutoModule = true;
    //barcode.Module = 3;

    return barCode;
}

Imports System
Imports System.Collections.Generic
Imports System.Drawing.Printing
Imports System.Windows.Forms
Imports DevExpress.XtraPrinting.BarCode
Imports DevExpress.XtraReports.UI
' ...
Public Function CreateIntelligentMailBarCode(ByVal BarCodeText As String) As XRBarCode
    ' Create a barcode control.
    Dim barCode As New XRBarCode()

    ' Set the barcode's type to Intelligent Mail.
    barCode.Symbology = New IntelligentMailGenerator()

    ' Adjust the barcode's main properties.
    barCode.Text = BarCodeText
    barCode.ShowText = True
    barCode.WidthF = 300F
    barCode.HeightF = 50F

    ' If the AutoModule property is set to false, uncomment the next line.
    barCode.AutoModule = True
    'barcode.Module = 3;

    Return barCode
End Function