Declarative multithreading

using System;
using ThreadBound;
using System.Threading;

namespace FormsTest
{
    [ThreadBound(ThreadBoundAttribute.ThreadBinding.WorkerContext)]
    class NumberWorkerC : ThreadBoundObject, IDisposable
    {
        public delegate void NewNumberHandler(int number);
        public event NewNumberHandler NewNumber;

        [AsyncThreaded]
        public IAsyncCallState CreateNumbers(int limit, int delay)
        {
            for (int i = 0; i <= limit; i++)
            {
                Thread.Sleep(delay);
                if (NewNumber != null)
                    NewNumber(i);

                if (WasCanceled())
                    break;
            }

            return null;
        }

        public void Dispose()
        {
        }
    }
}