C#.NET — Object-Oriented way to handle run-time errors: choose the correct mechanism.
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AOnError
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BHERESULT
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CExceptions
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DError codes
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Esetjmp/longjmp
Answer
Correct Answer: Exceptions
Explanation
Introduction / Context:Object-Oriented languages, including C#, use a structured mechanism for error handling that integrates with control flow and type hierarchies.
Given Data / Assumptions:
- We compare legacy or C-style techniques with OO approaches.
Concept / Approach:Exceptions provide a type-safe, structured way to signal and handle run-time errors using try/catch/finally blocks, enabling separation of error detection and error handling logic.
Step-by-Step Solution:
Identify the OO mechanism in C#: exceptions with try/catch/finally. Other options represent non-OO or language-specific patterns (VB OnError, C setjmp/longjmp, ad-hoc error codes).Verification / Alternative check:In C#, throwing and catching Exception-derived types is the standard approach endorsed by the framework.
Why Other Options Are Wrong:They are not idiomatic in C# or are legacy/non-OO techniques.
Common Pitfalls:Overusing exceptions for normal control flow or swallowing exceptions without logging.
Final Answer:Exceptions