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本篇文章為大家展示了Thread類線程常用操作有哪些,內(nèi)容簡明扼要并且容易理解,絕對能使你眼前一亮,通過這篇文章的詳細(xì)介紹希望你能有所收獲。
創(chuàng)建線程
線程是通過擴(kuò)展 Thread 類創(chuàng)建的。擴(kuò)展的 Thread 類調(diào)用 Start() 方法來開始子線程的執(zhí)行。
下面的程序演示了這個(gè)概念:
class ThreadCreationProgram { public static void CallToChildThread() { Console.WriteLine("Child thread starts"); } static void Main(string[] args) { ThreadStart childref = new ThreadStart(CallToChildThread); Console.WriteLine("In Main: Creating the Child thread"); Thread childThread = new Thread(childref); childThread.Start(); Console.ReadKey(); } }
當(dāng)上面的代碼被編譯和執(zhí)行時(shí),它會(huì)產(chǎn)生下列結(jié)果:
In Main: Creating the Child thread Child thread starts
管理線程
Thread 類提供了各種管理線程的方法。
下面的實(shí)例演示了 sleep() 方法的使用,用于在一個(gè)特定的時(shí)間暫停線程。
class ThreadCreationProgram { public static void CallToChildThread() { Console.WriteLine("Child thread starts"); // 線程暫停 5000 毫秒 int sleepfor = 5000; Console.WriteLine("Child Thread Paused for {0} seconds", sleepfor / 1000); Thread.Sleep(sleepfor); Console.WriteLine("Child thread resumes"); } static void Main(string[] args) { ThreadStart childref = new ThreadStart(CallToChildThread); Console.WriteLine("In Main: Creating the Child thread"); Thread childThread = new Thread(childref); childThread.Start(); Console.ReadKey(); } }
當(dāng)上面的代碼被編譯和執(zhí)行時(shí),它會(huì)產(chǎn)生下列結(jié)果:
In Main: Creating the Child thread Child thread starts Child Thread Paused for 5 seconds Child thread resumes
銷毀線程
Abort() 方法用于銷毀線程。
通過拋出 threadabortexception 在運(yùn)行時(shí)中止線程。這個(gè)異常不能被捕獲,如果有 finally 塊,控制會(huì)被送至 finally 塊。
下面的程序說明了這點(diǎn):
class ThreadCreationProgram { public static void CallToChildThread() { try { Console.WriteLine("Child thread starts"); // 計(jì)數(shù)到 10 for (int counter = 0; counter <= 10; counter++) { Thread.Sleep(500); Console.WriteLine(counter); } Console.WriteLine("Child Thread Completed"); } catch (ThreadAbortException e) { Console.WriteLine("Thread Abort Exception"); } finally { Console.WriteLine("Couldn't catch the Thread Exception"); } } static void Main(string[] args) { ThreadStart childref = new ThreadStart(CallToChildThread); Console.WriteLine("In Main: Creating the Child thread"); Thread childThread = new Thread(childref); childThread.Start(); // 停止主線程一段時(shí)間 Thread.Sleep(2000); // 現(xiàn)在中止子線程 Console.WriteLine("In Main: Aborting the Child thread"); childThread.Abort(); Console.ReadKey(); } }
當(dāng)上面的代碼被編譯和執(zhí)行時(shí),它會(huì)產(chǎn)生下列結(jié)果:
In Main: Creating the Child thread Child thread starts 0 1 2 In Main: Aborting the Child thread Thread Abort Exception Couldn't catch the Thread Exception
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