调用的目标（MethodBase.Invoke方法）已引发异常

本文介绍了调用的目标（MethodBase.Invoke方法）已引发异常的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想捕获在用invoke方法调用的方法中引发的异常。

I want to catch the exceptions that are thrown in methods called with invoke method.

public void TestMethod() { try { method.Invoke(commandHandler, new[] { newCommand }); } catch(Exception e) { ExceptionService.SendException(e); } }

方法。调用调用以下方法：

method.Invoke calls the following method:

public void Register(/*parameters*/) { if(test_condition()) throw new CustomException("Exception Message"); }

问题是当我在CustomMethod中捕获CustomException时，e catch语句上的变量的类型不是CustomException。它具有以下消息：调用的目标已引发异常。

The problem is that when I catch the CustomException, in the TestMethod, the e variable on the catch statement has NOT the type CustomException. It has the following message: "Exception has been thrown by the target of an invocation".

我想捕获已引发的异常（这是CustomException），并将其传递给ExceptionService机制。

I want to catch the exception that has been raised (which is CustomException), and pass it to the ExceptionService mechanism.

我在做什么错了？

推荐答案

是的，你是通过反射重新调用该方法。因此，根据文档， TargetInvocationException 。

Yes, you're calling the method via reflection. So as per the documentation, a TargetInvocationException will be thrown if the target method throws an exception.

只需使用 InnerException 属性

Just use the InnerException property to obtain - and potentially throw - the original exception.

因此，例如：

try { method.Invoke(commandHandler, new[] { newCommand }); } catch (TargetInvocationException e) { ExceptionService.SendException(e.InnerException); }