[Solved] You want to catch an exception, add extra info, and then rethrow it preserving the original stack trace. Which pattern is correct?try { // code } catch (Exception ex) { // add info ??? } | C Sharp (C#)

C Sharp (C#) - Exception Handling

You want to catch an exception, add extra info, and then rethrow it preserving the original stack trace. Which pattern is correct?

try {
  // code
} catch (Exception ex) {
  // add info
  ???
}

Athrow new Exception("Extra info", ex);

Bthrow ex;

Cthrow;

Dthrow new Exception(ex.Message);

Step-by-Step Solution

Solution:

Step 1: Understand wrapping exceptions
To add extra info, create a new exception with the original as inner exception: new Exception("Extra info", ex).
Step 2: Preserve original stack trace
This wrapping keeps original exception details inside the new one, preserving context.
Step 3: Why not other options?
throw ex; resets stack trace, throw; rethrows original without extra info, and throw new Exception(ex.Message); loses original exception object.
Final Answer:
throw new Exception("Extra info", ex); -> Option A
Quick Check:
Wrap with new Exception and inner ex = A [OK]

Quick Trick: Wrap original in new Exception to add info and preserve trace [OK]

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You want to catch an exception, add extra info, and then rethrow it preserving the original stack trace. Which pattern is correct?