The QR Code libraries allows your program to create (encode) QR Code image or, read (decode) an image containing one or more QR Codes. The attached source code is made of two solutions, a QR Code encoder solution and a QR Code decoder solution. The software was upgraded to VS 2022 .NET6.0. The source code is written in C#. It is an open-source code.
Please go to CodeProject website for full article. QR Code Encoder and Decoder C# Class Library for VS 2022 .NET 6.0 (Version 3.0.0)