CPS requires strict adherence to the rules and guidelines at Threading Rules
Important:
Do not call Task.Wait() or Task.Result in your code because these violate threading rule #2 and will often lead to deadlocks.
Visual Studio 2017: IProjectThreadingService.JoinableTaskFactory
Visual Studio 2015: IThreadHandling.AsyncPump
Avoid use of ThreadHelper.JoinableTaskFactory as that does not have the intelligence
to mitigate deadlocks between the UI thread and the CPS project lock. Instead,
use a CPS-specific JoinableTaskFactory instance, such as the one found on
IProjectThreadingService.JoinableTaskFactory/IThreadHandling.AsyncPump
Alternately if you want to create your own JoinableTaskFactory instance (for
example to associate with your own JoinableTaskCollection) you can call IProjectThreadingService.JoinableTaskContext.CreateFactory(joinableTaskCollection) / IThreadHandling.JoinableTaskContext.CreateFactory(joinableTaskCollection).