[Solved] Identify the error in the following code snippet:StreamReader reader = new StreamReader("data.txt"); string line = reader.ReadLine(); Console.WriteLine(line); reader.Close(); | C Sharp (C#)

C Sharp (C#) - File IO

Identify the error in the following code snippet:

StreamReader reader = new StreamReader("data.txt");
string line = reader.ReadLine();
Console.WriteLine(line);
reader.Close();

AMissing 'using' block to ensure file closure

BReadLine() should be ReadAll()

CStreamReader cannot read text files

Dreader.Close() should be called before ReadLine()

Step-by-Step Solution

Solution:

Step 1: Check resource management
The code opens a StreamReader but does not use a using block, risking resource leaks if exceptions occur.
Step 2: Confirm method correctness
ReadLine() is correct to read one line; Close() is called but manual closing is less safe than using.
Final Answer:
Missing 'using' block to ensure file closure -> Option A
Quick Check:
Use 'using' to auto-close files [OK]

Quick Trick: Always use 'using' to auto-close streams [OK]

Common Mistakes:

MISTAKES

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