You want to log an exception message but still rethrow it preserving the original stack trace. Which pattern is best?

hard🚀 Application Q8 of Q15

C Sharp (C#) - Exception Handling

Acatch (Exception ex) { Log(ex.Message); throw new Exception(ex.Message); }

Bcatch (Exception ex) { Log(ex.Message); throw ex; }

Ccatch (Exception ex) { Log(ex.Message); return; }

Dcatch (Exception ex) { Log(ex.Message); throw; }

Step-by-Step Solution

Solution:

Step 1: Identify logging and rethrowing without losing stack trace
Logging the message and using throw; rethrows the exception preserving stack trace.
Step 2: Analyze other options
throw ex; resets stack trace, throw new Exception(...) creates new exception, and return; swallows exception.
Final Answer:
catch (Exception ex) { Log(ex.Message); throw; } -> Option D
Quick Check:
Log then throw preserves stack trace = C [OK]

Quick Trick: Log then use throw alone to keep stack trace [OK]

Common Mistakes:

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