C＃不会捕获“嵌套”自定义异常

Z时代
2024-01-10
分类：问答

我试图在代码中捕捉到“嵌套”或“封装”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，因为错误非常具体。我试图让try/catch区块在我的Main方法中捕获I504Error，但它无法捕获它，即使它是从try/catch区块内部调用的。我的程序停止在我抛出错误的地方。我在这里做错了什么？C＃不会捕获“嵌套”自定义异常

// 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 
     } 
    } 
}