Cool stuff in .NET 4.0: System.Threading.Tasks.TaskScheduler

private void Save()

{

    System.Threading.Tasks.TaskScheduler uiScheduler = System.Threading.Tasks.TaskScheduler.FromCurrentSynchronizationContext();

    System.Threading.Tasks.Task<ErrorEnum>.Factory.StartNew(() =>

    {

        ErrorEnum callResult = ErrorEnum.OK;

        try

        {

            IsIdle = false;

            callResult = (ErrorEnum)DataContext.DomainRepository.SaveDomain(_domain);

            if (callResult != ErrorEnum.OK)

            {

                // If remote saving fails, rollback all the changes

                Rollback();

            }

            else

            {

                // If remote saving succeeds, save changes to local db

                SaveChangesToLocalDB();

            }

            return callResult;

        }

        catch (Exception ex)

        {

            LogManager.AddCMEventLog("DomainSettingsViewModel.Save", ex);

            // If anything goes wrong, rollback all the changes

            return ErrorEnum.LocalFatalAnonymousError;

        }

        finally

        {

            IsIdle = true;

        }

    }).ContinueWith(task => ShowResult(task.Result), uiScheduler);

}




This running tasks in background thread, then call UI thread to execute the ShowResult() function, Just like UIDispatcher