Calling Break Method

Question

Is it possible to call a method witch can break a loop from where it was called?

For example:

    void Run()
    {
        while (true)
        {
            Stop();
        }
    }

    void Stop()
    {
        break;
    }

Answer 1

That's not possible directly. But you can use a method that returns a bool to indicate if the loop should be canceled (shown in other answers). Another way is to use a CancellationTokenSource which can be used in threads or tasks but even in a synchronous loop:

void Run(CancellationTokenSource cancelToken)
{
    while (true)
    {
        if (cancelToken.IsCancellationRequested)
            break;
        Console.WriteLine("Still working...");
        Thread.Sleep(500);
    }
}

Demo:

var cts = new CancellationTokenSource();
// cancel it after 3 seconds, just for demo purposes
cts.CancelAfter(3000);
Program p = new Program();
p.Run(cts);
Console.WriteLine("Finished.");

This breaks the loop after 3 seconds. If you want to break after a certain condition you can call the Cancel method.