Multiple Exceptions have occurred, what's the right way to rethrow?

Question

public void DoRiskyThings(List<Action> tasks) { List<Exception> exceptions = new List<Exception>(); foreach(Action task in tasks) { try {task()} catch (Exception e) {exceptions.Add(e)}; } if (exceptions.Any()) { //... what goes here? } }

I'd like to preserve all the information (especially messages and stacktraces).

See this highly upvoted answer: stackoverflow.com/a/178464/555547 — Jason
– Jason, Commented Feb 24, 2012 at 21:14
@Jason that's great but that method of rethrow only works from inside a catch block. I'm outside of it. — Amy B
– Amy B, Commented Feb 24, 2012 at 21:16
@Jason: He wants to throw multiple exceptions. That won't work. — SLaks
– SLaks, Commented Feb 24, 2012 at 21:16

SLaks · Accepted Answer · 2012-02-24 21:13:58Z

5

You're looking for the AggregateException class.

answered Feb 24, 2012 at 21:13

SLaks

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1 Comment

Amy B Over a year ago

Ah, I need .net 4, but I see I can make my own. Thanks.

AVIDeveloper · Accepted Answer · 2012-02-24 21:16:51Z

Just bundle your list into a super-exception:

class MultiException : Exception { public List<Exception> ExceptionsList { get; set; } }

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