C＃中的Thread.ResetAbort方法

Thread类负责在多线程编程中创建和管理线程。它提供了一种称为ResetAbort的方法，该方法负责取消当前线程的中止请求。它防止ThreadAbortException终止线程。

句法：

public static void ResetAbort ();

例外情况：

• ThreadStateException ：如果没有在当前线程上调用Abort。
• SecurityException ：如果调用者没有当前线程所需的安全权限。

下面的程序说明了ResetAbort()方法的用法：

范例1：

// C# program to illustrate the
// use of ResetAbort method
using System;
using System.Threading;
using System.Security.Permissions;
  
class MyThread {
  
    // Method Job
    public void Job()
    {
        try {
  
            for (int I = 0; I < 10; I++) 
            {
                Console.WriteLine(" My Thread is working..!");
                Thread.Sleep(100);
            }
        }
  
        catch (ThreadAbortException e) 
        {
            Console.WriteLine("Caught ThreadAbortException and reset");
            Console.WriteLine("Ex message: {0}", e.Message);
            Thread.ResetAbort();
        }
  
        Console.WriteLine("Thread is alive and working..!");
        Thread.Sleep(2000);
        Console.WriteLine("Thread is finished its working..!");
    }
}
  
// Driver Class
class GFG {
  
    // Main Method
    public static void Main()
    {
        MyThread obj = new MyThread();
        Thread T = new Thread(obj.Job);
        T.Start();
        Thread.Sleep(100);
        Console.WriteLine("Aborting thread");
        T.Abort();
        T.Join();
        Console.WriteLine("Main thread ends");
    }
}

输出：

My Thread is working..!
Aborting thread
Caught ThreadAbortException and reset
Ex message: Thread was being aborted.
Thread is alive and working..!
Thread is finished its working..!
Main thread ends

范例2：

// C# program to illustrate the
// use of ResetAbort method
using System;
using System.Threading;
  
// Driver Class
public class GFG {
  
    // Main Method
    public static void Main()
    {
  
        // Creating and initializing  threads
        Thread thr = new Thread(Job);
  
        // Start the execution of Thread
        thr.Start();
  
        // Reset abort request
        // Using ResetAbort method
        Thread.ResetAbort();
    }
  
    public static void Job()
    {
        Console.WriteLine("Hello");
    }
}

运行时错误：

Unhandled Exception:
System.Threading.ThreadStateException: Unable to reset abort because no abort was requested.

参考：

• https://docs.microsoft.com/zh-cn/dotnet/api/system.threading.thread.resetabort?view=netframework-4.7.2#System_Threading_Thread_ResetAbort