如何在C#中检查线程是否为后台线程（） _算法

【如何在C#中检查线程是否为后台线程（）】众所周知, 线程是由Thread类创建和管理的。因此, Thread类提供了一个称为IsBackground属性检查给定线程是在后台运行还是在前台运行。如果值IsBackground设置为true, 则表示该线程是后台线程。或者如果IsBackground设置为false, 则表示该线程是前台线程，下面详细为你介绍如何检查线程是否为后台线程。
语法如下：

public bool IsBackground { get; set; }

返回值：该属性返回true如果此线程是或将要成为后台线程, 否则它将返回, false.
例外：该属性将给ThreadStateException如果线程已死。
范例1：

// C# program to illustrate the // concept of Background thread using System; using System.Threading; class GFG {// Main method static void Main( string [] args) { // Creating and initializing thread Thread mythr = new Thread(mythread); // Name of the thread is Geek thread mythr.Name = "Geek thread" ; mythr.Start(); // IsBackground is the property // of Thread which allows thread // to run in the background mythr.IsBackground = true ; Console.WriteLine( "Main Thread Ends!!" ); }// Static method static void mythread() {// Display the name of the // current working thread Console.WriteLine( "In progress thread is: {0}" , Thread.CurrentThread.Name); Thread.Sleep(1000); Console.WriteLine( "Completed thread is: {0}" , Thread.CurrentThread.Name); } }

输出：

In progress thread is: Geek thread Main Thread Ends!!

检查线程是否为后台线程示例2：

// C# program to illustrate the // concept of IsBackground property using System; using System.Threading; class Geeks {int J; public Geeks( int J) { this .J = J; }// This method will display // the counting of background // and foreground threads public void display() { for ( int i = 0; i < J; i++) {Console.WriteLine( "{0} count: {1}" , Thread.CurrentThread.IsBackground ? "Background Thread" : "Foreground Thread" , i); Thread.Sleep(250); }Console.WriteLine( "{0} finished its counting." , Thread.CurrentThread.IsBackground ? "Background Thread" : "Foreground Thread" ); } }// Driver Class class GFG {// Main method static void Main() { // Creating and initializing // objects of Geeks class // Creating and initializing // objects of Thread class Geeks obj1 = new Geeks(5); Thread fthr = new Thread( new ThreadStart(obj1.display)); Geeks obj2 = new Geeks(10); Thread bthr = new Thread( new ThreadStart(obj2.display)); // bthr thread is a background // thread because the value of // IsBackground property is true bthr.IsBackground = true ; fthr.Start(); bthr.Start(); } }

输出：

Foreground Thread count: 0 Background Thread count: 0 Background Thread count: 1 Foreground Thread count: 1 Background Thread count: 2 Foreground Thread count: 2 Background Thread count: 3 Foreground Thread count: 3 Background Thread count: 4 Foreground Thread count: 4 Background Thread count: 5 Foreground Thread finished its counting.

注意：