How to cause AggregateException with TPL?
- by Sly
I'm trying to recreate the conditions that will cause this exception:
System.AggregateException: A Task's exception(s) were not observed
either by Waiting on the Task or accessing its Exception property.
As a result, the unobserved exception was rethrown by the finalizer thread.`
I wrote this program thinking I'd cause the exception but it does not:
using System;
using System.Threading.Tasks;
namespace SomeAsyncStuff
{
class Program
{
static void Main(string[] args)
{
Task.Factory.StartNew(() => { throw new NullReferenceException("ex"); });
GC.Collect();
Console.WriteLine("completed");
}
}
}
In my real application, I use TPL and I did not code my exception handling right. As a result I get that exception. Now I'm trying to recreate the same conditions in a separate program to experiment with unobserved exceptions.
