Cloud API – Barcode Generator – VB.NET – Generate Barcode

Home
/
Articles
/
Cloud API – Barcode Generator – VB.NET – Generate Barcode

Cloud API – Barcode Generator – VB.NET – Generate Barcode

Module1.vb

Imports System.IO
Imports System.Net
Imports Newtonsoft.Json.Linq
 
Module Module1
 
    ' (!) If you are getting '(403) Forbidden' error please ensure you have set the correct API_KEY
 
    ' The authentication key (API Key).
    ' Get your own by registering at https://secure.bytescout.com/users/sign_up
    Const API_KEY As String = "***********************************"
 
    ' Result file name
    Const ResultFileName As String = ".\barcode.png"
    ' Barcode type. See valid barcode types in the documentation https://secure.bytescout.com/cloudapi.html#api-Default-barcodeGenerateGet
    Const BarcodeType As String = "Code128"
    ' Barcode value
    Const BarcodeValue As String = "qweasd123456"
 
    Sub Main()
 
        ' Create standard .NET web client instance
        Dim webClient As WebClient = New WebClient()
 
        ' Set API Key
        webClient.Headers.Add("x-api-key", API_KEY)
 
        ' Prepare URL for `Barcode Generator` API call
        Dim query As String = Uri.EscapeUriString(string.Format(
            "https://api.pdf.co/v1/barcode/generate?name={0}&type={1}&value={2}", 
            Path.GetFileName(ResultFileName), 
            BarcodeType, 
            BarcodeValue))
 
        Try
            ' Execute request
            Dim response As String = webClient.DownloadString(query)
 
            ' Parse JSON response
            Dim json As JObject = JObject.Parse(response)
 
            If json("error").ToObject(Of Boolean) = False Then
                 
                ' Get URL of generated barcode image file
                Dim resultFileURI As string = json("url").ToString()
 
                ' Download the image file
                webClient.DownloadFile(resultFileURI, ResultFileName)
 
                Console.WriteLine("Generated barcode saved to ""{0}"" file.", ResultFileName)
 
            Else
                Console.WriteLine(json("message").ToString())
            End If
             
        Catch ex As WebException
            Console.WriteLine(ex.ToString())
        End Try
 
        webClient.Dispose()
 
 
        Console.WriteLine()
        Console.WriteLine("Press any key...")
        Console.ReadKey()
 
    End Sub
 
End Module

Click here to get your Free Trial version of the SDK

Cloud API – Barcode Generator – VB.NET – Generate Barcode

Cloud API – Barcode Generator – VB.NET – Generate Barcode

Tutorials: