How to pass an async method as an action?

Question

I've this method:

public class Publish
{
    public async Task NowAsync(bool isFinal)
    {
        //...
    }
}

and I want to pass it as a parameter here instead of () => Console.WriteLine():

RecurringJob.AddOrUpdate("name", () => Console.WriteLine("Hello"));

AddOrUpdate method accepts a parameter of type Expression<Action>

How can I do it? thanks.

`var isFinal = true; RecurringJob.AddOrUpdate("name", async () => await NowAsync(isFinal));` — FCin, Oct 13 '17 at 13:08
Maybe [This way](https://stackoverflow.com/questions/8511466/whats-the-method-signature-for-passing-an-async-delegate)? — SᴇM, Oct 13 '17 at 13:08
@FCin "Async lambda expressions cannot be converted to expression trees" — Blendester, Oct 13 '17 at 13:13
@Blendester You didn't specify that this was for Entity-Framework. Entity-Framework doesn't support this at all. — Bradley Uffner, Oct 13 '17 at 13:16
@BradleyUffner But this is not for entity framework.. I want to run that method in Hangfire — Blendester, Oct 13 '17 at 13:17
Ahh, sorry for the assumption, I'll remove the tag. I've added the "Hangfire` tag for you instead. — Bradley Uffner, Oct 13 '17 at 13:18

score 4 · Accepted Answer · edited Oct 13 '17 at 13:54

4

Starting with hangfire 1.6 (which is 1.5 years old at this moment) you can pass async methods (methods that return Task) to AddOrUpdate without converting them to synchronous methods (to Action):

RecurringJob.AddOrUpdate("name", () => NowAsync(true), (string) null);

edited Oct 13 '17 at 13:54

jbl

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answered Oct 13 '17 at 13:46

Evk

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How to pass an async method as an action?

1 Answers1