Hands-On Parallel Programming with C# 8 and .NET Core 3

Methods returning void

If the methods return void instead of Task, the program will crash. You can try running the following code.

Here is a method returning void instead of Task:

private async static void Scenario4CallAsyncWithoutAwaitFromOutsideTryCatch(){    Task task = DoSomethingFaulty();    Console.WriteLine("This should not execute");}

And here is a call from the Main method:

public static void Main(){    Console.WriteLine("Main Method Started");     Scenario4CallAsyncWithoutAwaitFromOutsideTryCatch();    Console.WriteLine("In Main Method After calling method");     Console.ReadLine();}

There will be no output, as the program will crash.

Although it makes sense to never return void from async methods, mistakes do happen. We should write code so that ...