QR image generator

Question

Hello experts,

I need to generate the QR code image from a simple text (contact) file and found many commercial components but am not allowed to use any third party dlls, few free source codes including vCardEditor on github, but all are C# which I cannot understand or successfully convert to VB.

Anyone knows a VB.net tutorial or source code on MSDN?

And this task only needs the contents of contact file (string) as input? Am I right?

Thanks in advance.

Answer 1

Hi @StewartBW ,

Since you cannot use third-party DLLs, you can use an open-source QR code generation library written in pure .NET. For example QRCoder library which you can install in NuGet Package Manager.

    Sub GenerateQRCode(contactInfo As String)
        Dim qrGenerator As New QRCodeGenerator()
        Dim qrCodeData As QRCodeData = qrGenerator.CreateQrCode(contactInfo, QRCodeGenerator.ECCLevel.Q)
        Dim qrCode As New QRCode(qrCodeData)
        Dim qrCodeImage As Bitmap = qrCode.GetGraphic(20)

        ' Save the QR code as an image file
        qrCodeImage.Save("path_to_save_qrcode_image.png", Imaging.ImageFormat.Png)
    End Sub

Best Regards.

Jiachen Li

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