How to determine whether a .NET exception is being handled?
- by romkyns
We're investigating a coding pattern in C# in which we'd like to use a "using" clause with a special class, whose Dispose() method does different things depending on whether the "using" body was exited normally or with an exception.
To the best of my understanding, the CLR keeps track of the current exception being handled until it's been consumed by a "catch" handler. However it's not entirely clear whether this information is exposed in any way for the code to access. Do you know whether it is, and if so, how to access it?
For example:
using (var x = new MyObject())
{
x.DoSomething();
x.DoMoreThings();
}
class MyObject : IDisposable
{
public void Dispose()
{
if (ExceptionIsBeingHandled)
Rollback();
else
Commit();
}
}
This looks almost like System.Transactions.TransactionScope, except that success/failure is not determined by a call to x.Complete(), but rather based on whether the using body was exited normally.
