Using async in a method in a chain

Question

static async Task Main(string[] args)
{
    var txt = await GetTask();
}

static Task<string> GetTask()
{
    return GetText();
}

static async Task<string> GetText()
{
    await Task.Delay(2000);
    return "result";
}

Is asynchrony breaking in my case? Do I need to make the GetTask async method?

Don't think of async methods, *specifically* as being methods that are marked `async`. async methods are *any* method that returns a `Task` that represents the work that may (or may not) be completed yet. *how* the method produces that `Task` is entirely an implementation detail of that method. — Damien_The_Unbeliever, Jun 18 '20 at 08:22
https://blog.stephencleary.com/2016/12/eliding-async-await.html — Stephen Cleary, Jun 18 '20 at 10:58

score 2 · Answer 1 · edited Jun 20 '20 at 14:31

2

If it's a simple forward, no you don't, if there is a chance something in the code block could go wrong, you would have to handle exceptions with Task.FromException to push the exception onto the task (in the way the async and await pattern would), in which case it's probably easier to just use the async keyword and await the awaitables for a small performance hit of the IAsyncStateMachine.

edited Jun 20 '20 at 14:31

halfer

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answered Jun 18 '20 at 08:21

TheGeneral

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Using async in a method in a chain

1 Answers1