Running a Method in the background Asp.Net/C# (Async or Thread)

Question

What I needed to do was this

1. Calling a Post Method Called Cadastrar
2. Before this method finish I would call a new method called PessoaNotificacao

However the method Registration would not wait for the PessoaNotificação finalize for it to continue, I would like that the PessoaNotificação execute in the background.

I read a little about the methods Asyn and Await , but I could not understand very well, I would like a brief explanation or some content in which I can take a look to better understand this concept.

Answer 1

I see that all you need to do is fire an event and forget, so the async/await is not the best option, after all the await will wait for the return.

You can achieve the expected result as follows.:

public class Program
{
    public void Main()
    {       
        // Realiza algum processo;
        this.Cadastrar();
        // Realiza algum processo;
    }

    public void Cadastrar()
    {
        // Realiza algum processo;
        Task.Run(() => this.PessoaNotificacao(pessoa.Nome));
        // Realiza algum processo;
    }

    public void PessoaNotificacao(string nome)
    {
        // realiza algum processo longo.
    }
}

In the example above the Cadastrar will continue execution in parallel to PessoaNotificacao.

In any case there is no guarantee that the PessoaNotificacao will successfully finish the execution, so the best thing to do is to use the HangFire to manage the execution of the same.:

public class Program
{
    public void Main()
    {       
        // Realiza algum processo;
        this.Cadastrar();
        // Realiza algum processo;
    }

    public void Cadastrar()
    {
        // Realiza algum processo;
        BackgroundJob.Enqueue(() => Program.PessoaNotificacao(pessoa.Nome));
        // Realiza algum processo;
    }

    [DisplayName("Notificação enviada para {0}")]
    public static void PessoaNotificacao(string nome)
    {
        // realiza algum processo longo.
    }
}