QRCoder

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Info

QRCoder.Core is a simple library, written in C#.NET, based on QrCode which enables you to create QR codes. It is available as .NET Core version on NuGet. written in C#.NET, which enables you to create QR codes Use System.Drawing.Common below 7.0.0.

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Documentation

👉 Your first place to go should be our wiki. Here you can find a detailed documentation of the QRCoder and its functions.

• QRCode Wiki or QRCode.Core Wiki

Usage / Quick start

You only need four lines of code, to generate and view your first QR code.

using (QRCodeGenerator qrGenerator = new QRCodeGenerator())
using (QRCodeData qrCodeData = qrGenerator.CreateQrCode("The text which should be encoded.", QRCodeGenerator.ECCLevel.Q))
using (QRCode qrCode = new QRCode(qrCodeData))
{
    Bitmap qrCodeImage = qrCode.GetGraphic(20);
}

Optional parameters and overloads

The GetGraphics-method has some more overloads. The first two enable you to set the color of the QR code graphic. One uses Color-class-types, the other HTML hex color notation.

//Set color by using Color-class types
Bitmap qrCodeImage = qrCode.GetGraphic(20, Color.DarkRed, Color.PaleGreen, true);

//Set color by using HTML hex color notation
Bitmap qrCodeImage = qrCode.GetGraphic(20, "#000ff0", "#0ff000");

The other overload enables you to render a logo/image in the center of the QR code.

Bitmap qrCodeImage = qrCode.GetGraphic(20, Color.Black, Color.White, (Bitmap)Bitmap.FromFile("C:\\myimage.png"));