The IsBackground Property

As mentioned earlier, the .NET Framework defines two types of threads: foreground and background. The only difference between the two is that a process won’t end until all of its foreground threads have ended, but background threads are terminated automatically after all foreground threads have stopped. By default, a thread is created as a foreground thread. It can be changed to a background thread by using the IsBackground property defined by Thread, as shown here:

 public bool IsBackground { get; set; }

To set a thread to background, simply assign IsBackground a true value. A value of false indicates a foreground thread.