Question

In case of BackgroundWorker, a cancel can be reported by the e.Cancel – property of the DoWork – event handler.

How can I achieve the same thing with a Thread object?

Answer 1

Here is a full example of one way of doing it.

private static bool _runThread;
private static object _runThreadLock = new object();

private static void Main(string[] args)
{
    _runThread = true;
    Thread t = new Thread(() =>
    {
        Console.WriteLine("Starting thread...");
        bool _localRunThread = true;
        while (_localRunThread)
        {
            Console.WriteLine("Working...");
            Thread.Sleep(1000);
            lock (_runThreadLock)
            {
                _localRunThread = _runThread;
            }
        }
        Console.WriteLine("Exiting thread...");
    });
    t.Start();

    // wait for any key press, and then exit the app
    Console.ReadKey();

    // tell the thread to stop
    lock (_runThreadLock)
    {
        _runThread = false;
    }

    // wait for the thread to finish
    t.Join();

    Console.WriteLine("All done.");    
}

In short; the thread checks a bool flag, and keeps runing as long as the flag is true. I prefer this approach over calling Thread.Abort becuase it seems a bit nicer and cleaner.