我有一个System.Timers.Timer,我发现在ElapsedEventHandler中有时会发生异常,但进程没有而是死亡,但执行ElapsedEventHandler的线程在异常时死亡发生。不好,因为我当时没有意识到这个例外。为什么不终止进程?如果ElapsedEventHandler发生异常,我怎样才能以最好的方式终止进程?当线程c发生异常时进程没有终止#
我试着用System.Threading.Timer类似,然后进程终止。 你能解释一下这个区别吗?下面
完整代码:
class Program
{
static public void DoBad()
{
Console.WriteLine("DoBad enter");
string s = "hello";
object o = s;
int i = (int)o; // Ops! Something unexpected happend here... Exception
Console.WriteLine("DoBad exit");
}
static void DoIt1(object sender, System.Timers.ElapsedEventArgs e)
{
Console.WriteLine("\nDoIt1 enter");
DoBad(); // Process is NOT terminated when excpetion occurs in DoBad, thread just dies quietly but process continues. Why is process not terminated?
Console.WriteLine("DoIt1 exit");
}
static void Test1()
{
System.Timers.Timer t = new System.Timers.Timer(2000);
t.Elapsed += new System.Timers.ElapsedEventHandler(DoIt1);
t.Enabled = true;
}
static public void DoIt2(Object o)
{
Console.WriteLine("\nDoIt2 enter");
DoBad(); // Process terminated when exception occurs in DoBad.
Console.WriteLine("DoIt2 exit");
}
static void Test2()
{
System.Threading.Timer timer = new System.Threading.Timer(DoIt2, null, 0, 2000);
}
static void Main(string[] args)
{
Test1(); // Process NOT terminated when exception occurs in DoBad
// Test2(); // Process terminated when exception occurs in DoBad
// Why is process NOT terminated when running Test1 (but terminated when running Test2)?
// Want process to die. How to do it in best way?
Console.WriteLine("Main Sleep");
System.Threading.Thread.Sleep(11000);
Console.WriteLine("Main Slept");
}
}
/谢谢!
System.Timers.Timer只是普通的讨厌的方式。它吞噬了Elapsed事件处理程序抛出的所有异常。无论是自己捕捉还是喜欢System.Threading.Timer –