BackgroundWorker Helper using Lambda Expressions

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Introduction

I have found that using Lambda Expressions with the BackgroundWorker makes maintenance much easier since you can have everything together in a single method. You can implement the BackgroundWorker using Lambdas without any sort of helper class very easily:

using (var backgroundWorker = new BackgroundWorker())
{
    Debug.Print(string.Format("Start BackgroundWorker {0}", 
         sw.ElapsedMilliseconds));
    backgroundWorker.DoWork += (s, e) =>
        {
          var baskets = FoxDataAccess.GetOrderBaskets().
            Select(i => new StaggedBlotterOrderBasketViewModel(i));
          var mainList = new ObservableCollection
            <StaggedBlotterOrderBasketViewModel>(baskets);
          e.Result = mainList;
        };
    backgroundWorker.RunWorkerCompleted += (s, e) =>
        {
          Debug.Print(string.Format("Completed BackgroundWorker {0}", 
            sw.ElapsedMilliseconds));
          _mainList = (ObservableCollection
            <StaggedBlotterOrderBasketViewModel>)e.Result;
          RaisePropertyChanged("MainListSource");
          Debug.Print(string.Format("Converted Basket Data {0}", 
            sw.ElapsedMilliseconds));
          IsBusy = false;
        };
    backgroundWorker.RunWorkerAsync();

However, using a helper can slightly reduce the code and do exactly the same thing:

BackgroundWorkerHelper.Run(
        (s, e) =>
            {
              var baskets = FoxDataAccess.GetOrderBaskets().Select(i => 
                new StaggedBlotterOrderBasketViewModel(i));
              var mainList = new ObservableCollection
                <StaggedBlotterOrderBasketViewModel>(baskets);
              e.Result = mainList;
            },
        (s, e) =>
            {
              Debug.Print(string.Format("Completed BackgroundWorker {0}", 
                sw.ElapsedMilliseconds));
              _mainList = (ObservableCollection
                <StaggedBlotterOrderBasketViewModel>)e.Result;
              RaisePropertyChanged("MainListSource");
              Debug.Print(string.Format("Converted Basket Data {0}", 
                sw.ElapsedMilliseconds));
              IsBusy = false;
            });

I think what I like about using this helper class the best is it looks a lot cleaner than working directly with the BackgroundWorker class. The helper is actually quite simple, and actually also handles ProgressChanged:

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();
      }
    }
}

If you also have a ProgressChanged argument, there is the additional advantage of not only removing some boilerplate for the ProgressChanged event handler, but it also automatically sets the WorkerReportsProgress to true.