using System;

using System.Threading.Tasks;

​

public class Example

{

    public async Task MyAsyncMethod(Func<Task> interimcall)

    {

        call1();

        await interimcall().ConfigureAwait(true); // Do not use ConfigureAwait(false) here

        call2();

    }

​

    private void call1()

    {

        Console.WriteLine($"call1 running on thread {Environment.CurrentManagedThreadId}");

    }

​

    private void call2()

    {

        Console.WriteLine($"call2 running on thread {Environment.CurrentManagedThreadId}");

    }

    public static async Task Main()

    {

        Example example = new Example();

        await example.MyAsyncMethod(async () =>

        {

            await Task.Delay(1000); // Simulate async work

        });

    }

}