A BackgroundWorker is commonly used to perform tasks, sometimes time consuming, without blocking the UI thread.
// BackgroundWorker is part of the ComponentModel namespace.
using System.ComponentModel;
namespace BGWorkerExample
{
public partial class ExampleForm : Form
{
// the following creates an instance of the BackgroundWorker named "bgWorker"
BackgroundWorker bgWorker = new BackgroundWorker();
public ExampleForm() { ...