Hi,
I have an issue with your AuthorizeNet.dll file.
I added it under dependency-> assemblies inside my Core2.1 app
It give me no issues once I run build my app and even runs well and charge my demo card but I have issues with my CI under Azure
Please see the error below
Controllers/PaymentController.cs(1,7): error CS0246: The type or namespace name 'AuthorizeNet' could not be found (are you missing a using directive or an assembly reference?) [/home/vsts/work/1/s/mycompany/mycompany.csproj]
Once again, I can run your sample code and even charge a credit card, I got a receipt and everything looks fine
