C# Cross platform GUI for desktop and mobile

Question

I have a hobby project that I wrote in C#. Library is for geomatics calculations, it has over 4000 lines of code and I have spent years developing it. Recently I completed GUI using Windows Forms and shared it for free. I got good feedback and now I want to make it cross platform.

Problem is that after days of searching the Internet I found nothing. All links are outdated. I would prefer something like JavaFX, where I could possibly create one GUI for desktop and mobile without much hassle with compiling.

• GTK# is stuck (no mobile and no integration for newer versions with Xamarin studio)
• QtSharp is in Alpha stage
• Eto.Forms for mobile is still under development

Are there any free working alternatives with good tutorials/documentation in late 2016? Or do I have to rewrite my libraries in Java and create GUI in JavaFX?

Answer 1

At the moment there isn't a .Net framework that support all platform. The solution that covers most platform is Xamarin (right now support Android, iOS and MS Universal App). As this post suggest probably in the near future there will a Xamarin version also for Linux systems.
But there is an alternative: duocode . Basically it's a tool that convert c# code into javascript and once is transformed you can use the javascript code to implement a mobile interface using a cross platform framework like cordova. You will have two different application but with the same code base.