Not only methods but also lambda expressions can be async. Among other things this allows event handlers to be anonymous:
sumButton.Click += async (sender, e) => {
sumButton.IsEnabled = false;
await SumPageSizesAsync(GetUrls());
sumButton.IsEnabled = true;
};
AddHandler sumButton.Click, Async Function(sender, e)
sumButton.IsEnabled = False
Await SumPageSizesAsync(GetUrls())
sumButton.IsEnabled = True
End Function
Another useful application of asynchronous lambdas is for running asynchronous work on a background thread. Task.Run has overloads that expect delegates of type Func<Task> and Func<Task<TResult>> so that you can easily express this.
