Cancellation Signal

Use a cancellation flag to decide whether work should continue.

CancellationSignal.cs

using System;

class Program
{
    static void Main()
    {
        bool cancelRequested = ;
        string nextStep = cancelRequested ? "stop" : "download";
        string state = cancelRequested ? "cancelled" : "running";

        Console.WriteLine($"cancelRequested={cancelRequested}");
        Console.WriteLine($"nextStep={nextStep}");
        Console.WriteLine($"state={state}");
    }
}

using System;

class Program
{
    static void Main()
    {
        bool cancelRequested = ;
        string nextStep = cancelRequested ? "stop" : "download";
        string state = cancelRequested ? "cancelled" : "running";

        Console.WriteLine($"cancelRequested={cancelRequested}");
        Console.WriteLine($"nextStep={nextStep}");
        Console.WriteLine($"state={state}");
    }
}

async Long-running async work often receives a cancellation signal and checks it before starting the next step.