You want to ensure a file stream is always closed after use, even if an exception occurs. Which code pattern correctly uses finally to achieve this?

hard🚀 Application Q8 of 15

C Sharp (C#) - Exception Handling

Atry { FileStream fs = new FileStream("file.txt", FileMode.Open); // read file } finally { // do nothing }

Btry { FileStream fs = new FileStream("file.txt", FileMode.Open); // read file } catch { fs.Close(); }

CFileStream fs = new FileStream("file.txt", FileMode.Open); try { // read file } finally { fs.Close(); }

DFileStream fs = new FileStream("file.txt", FileMode.Open); try { // read file } catch { fs.Close(); }

Step-by-Step Solution

Solution:

Step 1: Identify where to close the file
File must be closed regardless of exceptions, so use finally.
Step 2: Check code correctness
FileStream fs = new FileStream("file.txt", FileMode.Open); try { // read file } finally { fs.Close(); } creates file stream outside try and closes it in finally, ensuring closure.
Final Answer:
FileStream fs = new FileStream("file.txt", FileMode.Open); try { // read file } finally { fs.Close(); } -> Option C
Quick Check:
finally ensures cleanup = C [OK]

Quick Trick: Use finally to close resources always [OK]

Common Mistakes:

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