c# Thread類線程常用操作詳解
創(chuàng)建線程
線程是通過擴展 Thread 類創(chuàng)建的。擴展的 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();
}
}
當上面的代碼被編譯和執(zhí)行時,它會產(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。
下面的實例演示了 sleep() 方法的使用,用于在一個特定的時間暫停線程。
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();
}
}
當上面的代碼被編譯和執(zhí)行時,它會產(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 在運行時中止線程。這個異常不能被捕獲,如果有 finally 塊,控制會被送至 finally 塊。
下面的程序說明了這點:
class ThreadCreationProgram
{
public static void CallToChildThread()
{
try
{
Console.WriteLine("Child thread starts");
// 計數(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();
}
}
當上面的代碼被編譯和執(zhí)行時,它會產(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
以上就是c# Thread類線程常用操作詳解的詳細內(nèi)容,更多關(guān)于c# Thread類線程的資料請關(guān)注腳本之家其它相關(guān)文章!
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