Thread.IsBackground Property
Assembly: mscorlib (in mscorlib.dll)
/** @property */ public boolean get_IsBackground () /** @property */ public void set_IsBackground (boolean value)
public function get IsBackground () : boolean public function set IsBackground (value : boolean)
Property Value
true if this thread is or is to become a background thread; otherwise, false.A thread is either a background thread or a foreground thread. Background threads are identical to foreground threads, except that background threads do not prevent a process from terminating. Once all foreground threads belonging to a process have terminated, the common language runtime ends the process. Any remaining background threads are stopped and do not complete.
The following code example contrasts the behavior of foreground and background threads. A foreground thread and a background thread are created. The foreground thread keeps the process running until it completes its while loop. After the foreground thread has finished, the process is terminated before the background thread has completed its while loop.
using System; using System.Threading; class Test { static void Main() { BackgroundTest shortTest = new BackgroundTest(10); Thread foregroundThread = new Thread(new ThreadStart(shortTest.RunLoop)); foregroundThread.Name = "ForegroundThread"; BackgroundTest longTest = new BackgroundTest(50); Thread backgroundThread = new Thread(new ThreadStart(longTest.RunLoop)); backgroundThread.Name = "BackgroundThread"; backgroundThread.IsBackground = true; foregroundThread.Start(); backgroundThread.Start(); } } class BackgroundTest { int maxIterations; public BackgroundTest(int maxIterations) { this.maxIterations = maxIterations; } public void RunLoop() { String threadName = Thread.CurrentThread.Name; for(int i = 0; i < maxIterations; i++) { Console.WriteLine("{0} count: {1}", threadName, i.ToString()); Thread.Sleep(250); } Console.WriteLine("{0} finished counting.", threadName); } }
import System.*;
import System.Threading.*;
import System.Threading.Thread;
class Test
{
public static void main(String[] args)
{
BackgroundTest shortTest = new BackgroundTest(10);
Thread foregroundThread = new Thread(new ThreadStart(shortTest.RunLoop));
foregroundThread.set_Name("ForegroundThread");
BackgroundTest longTest = new BackgroundTest(50);
Thread backgroundThread = new Thread(new ThreadStart(longTest.RunLoop));
backgroundThread.set_Name("BackgroundThread");
backgroundThread.set_IsBackground(true);
foregroundThread.Start();
backgroundThread.Start();
} //main
} //Test
class BackgroundTest
{
private int maxIterations;
public BackgroundTest(int maxIterations)
{
this.maxIterations = maxIterations;
} //BackgroundTest
public void RunLoop()
{
String threadName = Thread.get_CurrentThread().get_Name();
for (int i = 0; i < maxIterations; i++) {
Console.WriteLine("{0} count: {1}", threadName, String.valueOf(i));
Thread.Sleep(250);
}
Console.WriteLine("{0} finished counting.", threadName);
} //RunLoop
} //BackgroundTest
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
Reference
Thread ClassThread Members
System.Threading Namespace