I am trying to convert an old Visual Basic web site project, into a web application, using VS2019. I have tried following this:
https://devblogs.microsoft.com/aspnet/converting-a-web-site-project-to-a-web-application-project/
https://learn.microsoft.com/en-us/previous-versions/aa983476(v=vs.140)?redirectedfrom=MSDN
However, when I copy the remaining files (after converting app_code) and try to convert it to a web application, it is unable to parse any of the aspx files. I haven't been able to find the reason for this. Do any one have any ideas?