Barcode - Visual Basic tutorial. Create and read barcodes in VB.

Barcode Visual Basic tutorial shows how to create barcode and save it to image file in Visual Basic with BarCode Generator SDK and read barcode from image using BarCode Reader SDK.

Use this source code to create Code 39 barcode in VB with Barcode Generator SDK:

Imports Bytescout.BarCode
 
Module Module1
 
   Sub Main()
       ' Create new barcode
       Dim barcode As New Barcode()
 
       ' Set symbology
       barcode.Symbology = SymbologyType.Code39
       ' Set value
       barcode.Value = "Sample"
 
       ' Save barcode to image
       barcode.SaveImage("result.png")
 
       ' Show image in default image viewer
       Process.Start("result.png")
   End Sub
 
End Module

Read Code 39 barcode from image in VB using Barcode Reader SDK:

Imports System.IO
 
Imports Bytescout.BarCodeReader
 
Module Module1
 
   Sub Main()
       Dim pat As String = "result.png"
       Console.WriteLine("Reading barcode(s) from image {0}", Path.GetFullPath(pat))
 
       Dim bc As New Reader()
 
       bc.TypeToFind = SymbologyFilter.FindCode39
 
       Dim barcodes As FoundBarcode() = bc.ReadFrom(pat)
 
       Dim i As Integer
       For i = 0 To barcodes.Length - 1
           Console.WriteLine("Found barcode with type '{0}' and value '{1}'", barcodes(i).Type, barcodes(i).Value)
       Next
 
       Console.WriteLine("Press any key to exit..")
       Console.ReadKey()
   End Sub
 
End Module

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