Windows Forms Designer and WPF Designer for .NET Core

Question

I have recently heard that the alpha version of .NET Core (.NET Core 3.0) supports Windows Forms and WPF. But the Visual Studio Designer (and Visual Studio) doesn\'t

Answer 1

I removed the project files and recreated the project to make it work for me. New -> Project From Existing Code...

Answer 2

If you want to see a preview of your WPF XAML with Visual Studio 2019 just try out this extension https://marketplace.visualstudio.com/items?itemName=GiessweinApps.FAMLDesigner.

It supports .NET Core and .NET Framework: