Adliance.Buddy.QrCode 8.0.0.4

Adliance.Buddy.QrCode

The QR Code Buddy makes generating QR Codes with images and special colors easy.

It uses the ImageSharp and the ZXing.Net libraries internally, and can be used in device and cloud scenarios.

Note: make sure to buy a license for ImageSharp, when you meet their criteria.

Using the library

Let's start with the most simple example:

var qrCode = new QrCodeBuilder<Rgba32>("https://adliance.net")
    .Render();
qrCode.SaveAsPng("qr-adliance.png");

Rounded

To create the same QR code, but with rounded markers and content dots just add one line:

var qrCode = new QrCodeBuilder<Rgba32>("https://adliance.net")
    .Rounded()
    .Render();
qrCode.SaveAsPng("qr-adliance.png");

Overlay image

Adding a logo image in the center is as simple as adding another line:

var qrCode = new QrCodeBuilder<Rgba32>("https://adliance.net")
    .Rounded()
    .WithOverlayImage(Image.Load("logo.png"))
    .WithOverlayMargin(2) // optional margin around the image
    .Render();
qrCode.SaveAsPng("qr-adliance.png");

Colors

The background, finder patterns and content dots are individually configurable with ImageSharp Brushes:

var finderBrush = Brushes.Solid(Color.Gold);
var backgroundBrush = Brushes.Solid(Color.Black);

var topCenter = new PointF(125, 0);
var bottomCenter = new PointF(125, 250);
var repetitionMode = GradientRepetitionMode.None;
// approximating the QR code margin by setting the color stops at 10% and 90%
var topColor = new ColorStop(0.1f, Color.Yellow);
var bottomColor = new ColorStop(0.9f, Color.LimeGreen);

var contentBrush = new LinearGradientBrush(topCenter, bottomCenter,
                repetitionMode, topColor, bottomColor);

var qrCode = new QrCodeBuilder<Rgba32>("https://adliance.net")
    .WithContentBrush(contentBrush)
    .WithFinderPatternBrush(finderBrush)
    .WithBackgroundBrush(backgroundBrush)
    .Render();
qrCode.SaveAsPng("qr-adliance.png");

Transparent background

var qrCode = new QrCodeBuilder<Rgba32>("https://adliance.net")
    .Transparent()
    .Render();
qrCode.SaveAsPng("qr-adliance-transparent.png");

QR Code settings

Other information, like the error correction level and margins can also be set:

var qrCode = new QrCodeBuilder<Rgba32>("https://adliance.net")
    .WithDimensions(500, 500)
    .WithMargin(3)
    .WithErrorCorrectionLevel(ErrorCorrectionLevel.H)
    .Render();
qrCode.SaveAsPng("qr-adliance.png");