async-await-xamarin-scenarios

Async await scenarios in xamarin apps. The good, the bad, and the ugly.

Scenarios to explore

Bad examples and how to fix them Bad Examples 1:

• Invoking tasks
• Awaiting multiple tasks
• Returning tasks
• Threading

Bad Examples 2:

• Updating UI properties
• Handling exceptions
• Timing out tasks
• Using TaskCompletionSource

Bad Examples 3:

• Using LongRunningTask

Other samples/experiments

• Executing tasks:
  • The various ways to execute a task without awaiting. Just for illustration purposes. Don't execute tasks without awaiting unless there's a good reason to!
• Awaiting tasks:
  • How to await tasks properly.
• Configure await:
  • Using configure await.
• Awaiting multiple tasks:
  • The different methods for executing multiple tasks asynchronously.

Resources

Channel9 Async Await: https://channel9.msdn.com/Tags/async

Stephen Toub's blog posts: https://devblogs.microsoft.com/dotnet/author/toub/

Stephen Cleary's blog posts: https://blog.stephencleary.com/

Brandon Minnick's Async/Await talk: https://www.youtube.com/watch?v=J0mcYVxJEl0

TPL Dataflow: https://channel9.msdn.com/Shows/Going+Deep/Stephen-Toub-Inside-TPL-Dataflow

Screenshots