unable to add .net core 2.2 to visual studio

Question

I'm creating a Winforms (.Net Core) application in Visual Studio 2019, the project is created with.Net Core 3.0 which has no designer. I have downloaded and installed.Net Core 2.2 and.Net Core 2.1 SDKs but they are not being added to Visual Studio and still the only available option is.Net Core 3.0

Am I missing something?

Answer 1

You aren't able to use .net core versions previous to 3.0 due to the fact that Windows Desktop support is, in fact, a new feature to core 3.0.

@madreflection has pointed out in comments that there is a designer for WinForms that will work in core 3.0, but it is currently in preview. This may prove sufficient for your purposes in the interim, but you may be looking at sticking with Framework until the designer is out of preview.