1. Resultado de la impresion:
Para generar codigos de barras instalaremos previamente la fuente:3 of 9 Barcode
y el codigo de la aplicacion a continuación...
Imports System.Drawing.Printing
Public Class Form1
Dim Contenido As PrintPageEventArgs
Dim WithEventsDocumento As New PrintDocument
Dim impresora As New PrintDialog
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles Button1.Click
Configurar()
Documento.Print()
End Sub
Private Sub Documento_PrintPage(ByVal sender As System.Object, ByVal e As
System.Drawing.Printing.PrintPageEventArgs) Handles Documento.PrintPage
Contenido = e
Contenido.Graphics.DrawString("*" & Me.TextBox1.Text & "*", New Font("3 of 9 Barcode", 14),
Brushes.Black, 50, 300)
Contenido.Graphics.DrawString(Me.TextBox1.Text, New Font("Arial", 7), Brushes.Black, 90, 315)
Contenido.HasMorePages = False
End Sub

2. Private Sub Configurar()
impresora.Document = Documento
impresora.ShowDialog()
Documento.PrinterSettings = impresora.PrinterSettings
End Sub
End Class