Question

I want to kill a thread when something very bad happen. What’s your suggestion to do thread suicide?

Answer 1

You should never actually “kill” a thread. From your main program, you can abort it using the Thread.Abort method, but this is not recommended, and it is completely unnecessary.

Your thread should be nothing more than a method executing a long loop. If something “really bad” happens, simply return from this method and thread will end.

This would be enough for such a loop:

private void MyThreadLoop()
{
   try 
   {
        while (someCondition)
        {
            // do a lengthy operation
        }
   }
   catch (Exception ex) 
   {
        Log.Error("Something bad happened: ", ex);
   }
}

public void Start() 
{  
    Thread t = new Thread(MyThreadLoop); 
    t.Start()
}

On the other hand, if you need your main program to kill the thread (but this is not a “suicide” as you named it), then you should signal the thread that you want it to end, and not abort it without knowing what is going on in the background.