Incorrect stacktrace by rethrow

Question

I rethrow an exception with \"throw;\", but the stacktrace is incorrect:

static void Main(string[] args) {
    try {
        try {
            throw new Exce         


        

Answer 1

There is a duplicate question here.

As I understand it - throw; is compiled into 'rethrow' MSIL instruction and it modifies the last frame of the stack-trace.

I would expect it to keep the original stack-trace and add the line where it has been re-thrown, but apparently there can only be one stack frame per method call.

Conclusion: avoid using throw; and wrap your exception in a new one on re-throwing - it's not ugly, it's best practice.