[英]Exception has been thrown by the target of an invocation (MethodBase.Invoke Method)
I want to catch the exceptions that are thrown in methods called with invoke method. 我想捕获在使用invoke方法调用的方法中抛出的异常。
public void TestMethod()
{
try
{
method.Invoke(commandHandler, new[] { newCommand });
}
catch(Exception e)
{
ExceptionService.SendException(e);
}
}
method.Invoke calls the following method: method.Invoke调用以下方法:
public void Register(/*parameters*/)
{
if(test_condition())
throw new CustomException("Exception Message");
}
The problem is that when I catch the CustomException, in the TestMethod, the e variable on the catch statement has NOT the type CustomException. 问题是当我捕获CustomException时,在TestMethod中,catch语句中的e变量没有类型CustomException。 It has the following message: "Exception has been thrown by the target of an invocation".
它有以下消息:“调用目标已抛出异常”。
I want to catch the exception that has been raised (which is CustomException), and pass it to the ExceptionService mechanism. 我想捕获已引发的异常(这是CustomException),并将其传递给ExceptionService机制。
What am I doing wrong? 我究竟做错了什么?
Yes, you're calling the method via reflection. 是的,你通过反射调用方法。 So as per the documentation , a
TargetInvocationException
will be thrown if the target method throws an exception. 因此,根据文档 ,如果目标方法抛出异常,将抛出
TargetInvocationException
。
Just use the InnerException
property to obtain - and potentially throw - the original exception. 只需使用
InnerException
属性来获取 - 并可能抛出 - 原始异常。
So for example: 例如:
try
{
method.Invoke(commandHandler, new[] { newCommand });
}
catch (TargetInvocationException e)
{
ExceptionService.SendException(e.InnerException);
}
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