Avoid Async Void

Show a warning when async void is used inappropriately. The following table summarizes the analysis rules:

where	usages found	usages not found
public surface methods	show warning	show warning if not annotated with [UsedImplicitly]
non-public surface methods	show warning if any non-direct event handler usage exists
inherited methods*	show warning	show warning

* overriding or implementing interface member

Quick Fixes

• Use async Task for async void methods and local functions
• Remove the async modifier for lambda and anonymous method expressions

Current Limitations

• indirect event targets are not detected
• Command pattern with the async "Execute" method is not (yet) detected

💡 The analyzer can be deactivated in the ReSharper Options dialog.