ผมสร้างบาร์โค๊ดจาก vb.net มาแล้วครับ ปริ้นออกมาได้แล้ว แต่ว่าติดอย่างเดียวคือสแกนบาร์โค๊ดไม่ติด

Imports System.Drawing
Imports System.IO
Public Class testprint
Function createBarCodeSimple(ByVal info As String) As Drawing.Bitmap
        Dim k As String = info
        Dim stchar As String = String.Empty
        Dim addStar As String = "*"
        Dim full As String = addStar & info & addStar
        info = full
        Dim bc As Drawing.Bitmap = New Drawing.Bitmap(1, 1)
        'Dim myf As Font = New Font("Arial", 12, FontStyle.Regular) ', GraphicsUnit.Point)
        Dim ft As Drawing.Font = New Drawing.Font("Free 3 of 9 Extended", 25, Drawing.FontStyle.Regular, Drawing.GraphicsUnit.Point)
        Dim g As Drawing.Graphics = Drawing.Graphics.FromImage(bc)
        Dim infoSize As Drawing.SizeF = g.MeasureString(info, ft)
        bc = New Drawing.Bitmap(bc, infoSize.ToSize)
        g = Drawing.Graphics.FromImage(bc)
        g.Clear(Drawing.Color.White)
        g.TextRenderingHint = Drawing.Text.TextRenderingHint.SingleBitPerPixel '
        For Each chr As Char In info
            stchar &= chr.ToString & " "
        Next
        g.DrawString(stchar, ft, New Drawing.SolidBrush(Drawing.Color.Black), 2, 3)
        g.Flush()
        ft.Dispose()
        g.Dispose()
        Return bc
    End Function
 Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage

        e.Graphics.DrawImage(createBarCodeSimple("*creaSi123mple*"), 0, 0)
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        PrintDocument1.Print()


    End Sub
End Class