Task Parallel Library

example.cs

public partial class AwesomeSauceForm : Form
{
    private Task _theTaskAtHand;

    public AwesomeSauceForm()
    {
        InitializeComponent();

        Task.Factory.StartNew(() =>
        {
            // Do some work if needed, like load data before the function loads, etc.
            // This will happen in the thread pool, off the UI thread
            Thread.Sleep(1000);

            // Begin working with the UI
            _theTaskAtHand.Start();
        });

        // check out MSDN to see what you have access in terms of parameters, I think they can dispatch quite a bit of info to you
        _theTaskAtHand = new Task((paramsIfNeeded) => {
            textBox1.Text = "From child task";
        }, TaskScheduler.FromCurrentSynchronizationContext());
    }
}