BackgroundWorkerHelper

public static class BackgroundWorkerHelper
    {
        public static void Run(DoWorkEventHandler doWork,
                            RunWorkerCompletedEventHandler completed = null,
                            ProgressChangedEventHandler progressChanged = null)
        {
            using (var backgroundWorker = new BackgroundWorker())
            {
                backgroundWorker.DoWork += doWork;
                if (completed != null)
                    backgroundWorker.RunWorkerCompleted += completed;
                if (progressChanged != null)
                {
                    backgroundWorker.WorkerReportsProgress = true;
                    backgroundWorker.ProgressChanged += progressChanged;
                }
                backgroundWorker.RunWorkerAsync();
            }
        }
    }


    public static class BackgroundWorkerHelperOrgainal
    {
        public static BackgroundWorker backgroundWorker { get; set; }
        public static void Run(DoWorkEventHandler doWork,
                            RunWorkerCompletedEventHandler completed = null,
                            ProgressChangedEventHandler progressChanged = null)
        {
            backgroundWorker = new BackgroundWorker();
            backgroundWorker.WorkerReportsProgress = true;
            backgroundWorker.WorkerSupportsCancellation = true;
            backgroundWorker.DoWork += doWork;
            if (completed != null)
                backgroundWorker.RunWorkerCompleted += completed;
            if (progressChanged != null)
            {
                backgroundWorker.WorkerReportsProgress = true;
                backgroundWorker.ProgressChanged += progressChanged;
            }
            if (!backgroundWorker.IsBusy)
                backgroundWorker.RunWorkerAsync();

        }
    }