Keeping Exception.StackTrace Intact when Rethrowing an Exception

.NET Programming

Nick Weinholt (.Net Performance guru and MVP) has an article on the correct method for rethrowing an exception in C# so that the Exception.StackTrace actually points to the root problem.

In C# the correct method for rethowing an exception is using throw; without any arguments within the catch block:

try {
// code
}
catch (Exception ex) {
throw; // Rethrow exception without resetting StackTrace
}

In VB.Net the method is the same:

Try
' code

Catch ex As Exception
Throw ' Rethrow exception without resetting StackTrace

End Try

Using this method the stack trace will go all the way down to the original exception, and not just to your catch block.



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