barcode Reader integration

I would advise you to use Free Spire.Barcode, it's free of charge, reliable and supports most of the common features and barcode types, such as read and generate QR code, EAN 13, code 128, code 39, code 93 etc.

You can download Free Spire.Barcode dll from nuget and give it a try:

https://www.nuget.org/packages/FreeSpire.Barcode/

How to read barcode with it:

string[] data = Spire.Barcode.BarcodeScanner.Scan("Code39.png",
Spire.Barcode.BarCodeType.Code39);

Check here for more details:

https://www.e-iceblue.com/Tutorials/Spire.Barcode/Spire.Barcode-Program-Guide/How-to-Scan-Barcode-in-C.html