Creating 3D models in WPF

Question

Hello Everyone!
I hope you all are doing very fine.  My question is that: I'm facing very difficulties in creating a 3d view/scene of lab in wpf. Now, what I tried:
1. used viewport3d  to draw triangles, mesh geometry etc. but it is too confusing for me. :(
2. The other way I found is import 3d models into xaml. and use it in wpf application. (from this link http://www.c-sharpcorner.com/uploadfile/mheydlauf/creating-a-simple-3d-scene-in-wpf/)
So, What if I use these 3d imported 3d models, will I be able to manipulate them  via C#?? what is best for creating 3d scene. Please help me out. 
Thanks