Greetings,
What is the context and subject of your application? and do you have UI design? I should know the exact features of the app and also,
I will build your windows application with Dotnet Core, and I will use SQL-Server So I really can help you to develop your app, but we need to discuss more in private chat. I would be glad to help you shape your requirements into products.
Hope to hear from you soon.
Thanks.