Microsoft приготовила отличную утилиту, которая позволит определить, насколько ваш проект на Winform, или WPF готов к портированию на .NET Core 3.0! (да-да, в .NET Core 3.0 будет поддержка десктопных приложений!)
https://blogs.msdn.microsoft.com/dotnet/2018/08/08/are-your-windows-forms-and-wpf-applications-ready-for-net-core-3-0/
https://blogs.msdn.microsoft.com/dotnet/2018/08/08/are-your-windows-forms-and-wpf-applications-ready-for-net-core-3-0/
.NET Blog
Are your Windows Forms and WPF applications ready for .NET Core 3.0? | .NET Blog
Download Portability Analyzer (2.37 MB) At Build 2018 we announced that we are enabling Windows desktop applications (Windows Forms and Windows Presentation Framework (WPF)) with .NET Core 3.0. You will be able to run new and existing Windows desktop applications…