我试图抓住"嵌套"或"封装"我的代码中的自定义错误(I504Error
)。我知道这通常不是最佳实践,但它应该适用于我的用例,因为错误是非常具体的。我试图让try/catch
阻止在我的I504Error
方法中捕获Main
,但它并没有抓住它,即使它被调用了从try/catch
块内部。我的程序停在我抛出错误的地方。我在这里做错了什么?
// Custom Error Handler
public class I504Error : Exception
{
public I504Error()
{
}
}
// Classes
public abstract class AbstractIternetThing
{
public abstract void DoSomething();
}
public class IternetThing : AbstractIternetThing
{
public override void DoSomething()
{
// bunch of other stuff
if (iternetThingWorkedProperly == false)
{
// Program stops here, doesn't get caught by the try/catch block in Program.Main()
throw new I504Error();
}
}
}
// Main script
class Pogram
{
static void Main(string[] args)
{
List<Task<AbstractIternetThing>> programThreads = new List<Task<AbstractIternetThing>>();
IternetThing iThing = new IternetThing();
try
{
for (int wantedThread = 0; wantedThread < 5; wantedThread++)
{
Task<AbstractIternetThing> iThingTask = new Task<AbstractIternetThing>(() => iThing.DoSomething());
iThingTask.Start();
}
}
// The Error should get caught here, but it doesnt?
catch (I504Error)
{
// Do something else
}
}
}
答案 0 :(得分:2)
这是因为你在Task
中拥有它,它位于一个单独的异步执行路径上。考虑使用async-await。然后编译器将重写您的代码,使其按预期工作。