CODEWITHSUNDEEP
c#
VMG
VMG

Reputation: 129

public static Task Run(Func<Task> function);

Can anybody provide any examples/code snippet to use below method.

public static Task Run(Func<Task> function);

I am trying to understand how to use the above overloaded method but I did not find any code in web.

As far as I understand this method takes func delegate as input parameter which should return a Task so please provide me some code snippet.

Thanks, Vinod

Upvotes: 2

Views: 520

Answers (1)

Dennis
Dennis

Reputation: 37770

This overload is often used to offload task to a thread pool thread.
Suppose you wrote this method inside console app:

    private static async Task DoSomeHeavyInitializationAsync()
    {
        // some heavy calculations;

        // some async I/O (e.q. reading from database, file, etc);
        await SomeMethodAsync(...);

        // again some heavy calculations, async I/O, etc...
    }

Now you want to call it from Program.Main, and keep Main responsive: if user don't want to wait app being initialized, he can press [enter] and terminate the app.

So, you need to offload task to be sure, that its code won't run on main thread. Task Run(Func<Task>) helps you:

    static void Main(string[] args)
    {
        Task.Run(DoSomeHeavyInitializationAsync);

        // do something else...

        Console.ReadLine();
    }

Upvotes: 3

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