AsyncTask.cs

public class AsyncTask<T>
    {
        private BackgroundWorker _worker;

        public bool Success { get; private set; }
        public Exception Error { get; private set; }
        public T Data { get; set; }

        public bool WaitingCancelation { get
            {
                if(_worker != null)
                    return _worker.CancellationPending;

                return false;
            }
        }

        public AsyncTask()
        {
            _worker = new BackgroundWorker();
            _worker.WorkerSupportsCancellation = true;
            _worker.WorkerReportsProgress = true;
        }

        public void SetOnFinish(RunWorkerCompletedEventHandler callback)
        {
            _worker.RunWorkerCompleted += callback;
        }

        public void SetOnProgress(ProgressChangedEventHandler callback)
        {
            _worker.ProgressChanged += callback;
        }

        public void SetWork(DoWorkEventHandler action)
        {
            Success = true;

            _worker.DoWork += (sender, e) =>
            {
                try
                {
                    if (!_worker.CancellationPending)
                        action(sender, e);
                }
                catch (Exception ex)
                {
                    Success = false;
                    Error = ex;
                }
            };
        }

        public void Run()
        {
            _worker.RunWorkerAsync();
        }

        public void Cancel()
        {
            _worker.CancelAsync();
        }

    }