Correct, the best place to start is from the Source Code for the demo. The tutorial expects that you've already had a chance to review the demo code and are familiarized with the layout.
Then, when you read steps explained like "Add a TreeView to a page and add a collection to the view model", it's not a reconstruction explanation of the entire demo, but rather to build the understanding of why that demo was built that way.
To keep things clear and concise, we try to stick to the scope of the Telerik component's responsibility, rather than a general Xamarin.Forms development tutorial. The only time we venture into unrelated development is if the context is about a featured external service (i.e. Azure Cognitive Services).
Before I close, I wanted to touch on your comments about your environment:
- Windows 10 1803 is fine. The min UWP SDK you want is 16299 (because of .NET Standard 2.0 requirement of Xamarin.Forms)
- Xamarin.Forms 4 or later is not officially supported yet. It should
work fine, but if there is un-explainable behavior, try using 3.6 (this is what we built the latest version of UI for Xamarin with).
- VS2019 16.2 is perfect! This gives you the best chance at a smoothly working Xamarin dev environment. Microsoft has put a lot of working into making Xamarin as seamless as possible (e.g. Remoted iOS Simulator, default Android SDKs, etc).
If you have any trouble, please don't hesitate to open a Support Ticket
and share the specifics of the problem so we can dig deeper.
Lance | Technical Support Engineer, Principal
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