C#中如何检查线程是否处于活动状态

要检查线程是否存在，代码如下：

示例

using System;
using System.Threading;
public class Demo {
   public static void Main() {
      Thread thread = new Thread(new ThreadStart(demo1));
      thread = Thread.CurrentThread;
      Console.WriteLine("线程还活着吗? = "+thread.IsAlive);
      ThreadPool.QueueUserWorkItem(new WaitCallback(demo2));
      Console.WriteLine("线程的当前状态 = "+thread.ThreadState);
      Console.WriteLine("ManagedThreadId = "+thread.ManagedThreadId);
      thread.IsBackground = true;
      Console.WriteLine("线程是后台线程吗? = "+thread.IsBackground);
   }
   public static void demo1() {
      Thread.Sleep(2000);
   }
   public static void demo2(object stateInfo) {
      Console.WriteLine("线程属于托管线程池? = "+Thread.CurrentThread.IsThreadPoolThread);
   }
}

输出结果

这将产生以下输出-

线程还活着吗? = True
线程的当前状态 = Running
ManagedThreadId = 775
线程是后台线程吗? = True
线程属于托管线程池? = True

示例

现在让我们来看另一个示例-

using System;
using System.Threading;
public class Demo {
   public static void Main() {
      Thread thread = new Thread(new ThreadStart(demo));
      thread.Start();
      Console.WriteLine("线程还活着吗? "+thread.IsAlive);
   }
   public static void demo() {
      Console.WriteLine("线程属于托管线程池? = "+Thread.CurrentThread.IsThreadPoolThread);
   }
}

输出结果

这将产生以下输出-

线程还活着吗? True
线程属于托管线程池? = False