Integrate other app into unity VR project to interact with that app

I have an application developed in c#. It’s front end is developed using the wpf. Radar Is basically a screen that has controll to edit range and show the other ships in the area. The front end is purely made independent of unity for some other application. So long story short need to integrate a wpf window in unity app.
OR
Is there any way to show your another application screen in unity in small size screen in ship bridge deck?