The Building Coder shares lots of code for setting up 3D views and section views in the respective topic groups:
- https://thebuildingcoder.typepad.com/blog/about-the-author.html#5.37
- https://thebuildingcoder.typepad.com/blog/about-the-author.html#5.38
In case that does not cover your exact use case, here are some other posts discussing isometric views:
- Setting up your ViewOrientation3D
- Exporting Image and Setting a Default 3D View Orientation
- How to Save a Solid to a File
- Saving a Solid to a SAT File Implementation
- Setting the View Display Background
- Setting up a 3D View like a Section View