问题
I'm using Async Targeting Pack in Silverlight 5.0 application. When unhandled exception occurs in some async method (assuming from async "state machine"), stack trace of the exception than contains only:
in System.Runtime.CompilerServices.AsyncMethodBuilderCore.b__0(Object state)
end not any other code locations.
来源：https://stackoverflow.com/questions/14364807/missing-exception-stack-trace-informations-when-using-async-targeting-pack-in-si