Get result from Task.Run() function without having to the caller method to wait for it?

Question

Is there a way to get the result of a Task.Run function like this

private Task<bool> UpdteSth(double bla)
        => Task.Run(() =>
        {
            try
            {
                UpdateOneAsync(doStuff);
            }
            catch (Exception exception)
            {
                sentryClient.CaptureException(exception);

                return false;
            }

            return true;
        });

from a caller method like this

public async Task<Entity> Get()
        {
            
                  UpdateSth(double bla);

        }

without having to await UpdateSth so Get can freely do whatever it needs without having to wait to UpdateSth result? I still need to get the result of UpdateSth() to do some logging business but other than that Get should not wait for UpdateSth to be done to continue its job. Clearly, await and Task.FromResult() still make my Get() to wait for the result or UpdateSth to be done so I cannot used those.

I'm not getting the issue here. If you want to fire-and-forget you just call UpdateSth(bla);. What am I missing here? — Enigmativity
– Enigmativity, Commented Aug 4, 2021 at 4:34
Very unclear what you want to achieve. It sounds like you want to know result of the function before it completed... If you find solution to that your really don't need to write any code at that point as you'd know all results in advance... Maybe edit question with desired sequence of actions you want to achieve? — Alexei Levenkov
– Alexei Levenkov, Commented Aug 4, 2021 at 4:53
As a side note, the implementation of the UpdteSth method violates Microsoft's guidelines regarding the use of the Task.Run method. — Theodor Zoulias
– Theodor Zoulias, Commented Aug 4, 2021 at 6:41
Related: Simplest way to do a fire and forget method in C#? and Best practices to Fire and Forget — Theodor Zoulias
– Theodor Zoulias, Commented Aug 4, 2021 at 6:47

Enigmativity · Accepted Answer · 2021-08-04 04:38:16Z

2

I'm not getting the issue here. If you want to fire-and-forget you just call UpdateSth(bla);. What am I missing here?

Here's an example of what that looks like:

public Task<Entity> Get() =>
    Task.Run(() =>
    {
        double bla = 4.2;
        UpdateSth(bla);
        return new Entity();
    });

This is a trivial example. I feel that there is a more stringent requirement that hasn't been explained in the question.

answered Aug 4, 2021 at 4:38

Enigmativity

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