I opened a .net core mvc project in Visual Studio 2017 and I can run it. The projects load in the studio as well as it can run it just fine. However if I go to properties of any project and I look at Target framework, it is blank. When I click the dropdown I only see 1.0, 1.1, 2.0 and 2.1. There is no option for 2.2 or 3.0. I know I have it all properly installed because when I use VS 2019 these options show. I would also like them to show in 3.0.
I have gone to Options of Visual studio and enabled "Use Previews of the .NET Core SDK". I have Restarted Visual Studio several times, even my entire PC to make sure. However, it still does not show.
Is there something else I need to do?