[Solved] Which of the following is the correct syntax for a using statement in C#? - Ans: using (var file = new FileStream("file.txt", FileMode.Open)) { /* code */ } | C Sharp (C#)

C Sharp (C#) - Exception Handling

Which of the following is the correct syntax for a using statement in C#?

Ausing (var file = new FileStream("file.txt", FileMode.Open)) { /* code */ }

Busing var file = new FileStream("file.txt", FileMode.Open); { /* code */ }

Cusing var file = new FileStream("file.txt", FileMode.Open) { /* code */ }

Dusing (var file = new FileStream("file.txt", FileMode.Open)); { /* code */ }

Step-by-Step Solution

Solution:

Step 1: Identify correct using block syntax
The correct syntax uses parentheses around the resource declaration and a block with braces: using (var resource = ... ) { ... }.
Step 2: Check each option
using (var file = new FileStream("file.txt", FileMode.Open)) { /* code */ } matches the correct syntax. using var file = new FileStream("file.txt", FileMode.Open); { /* code */ } misses parentheses and incorrectly uses a semicolon. using var file = new FileStream("file.txt", FileMode.Open) { /* code */ } misses parentheses and braces. using (var file = new FileStream("file.txt", FileMode.Open)); { /* code */ } has a semicolon after the parentheses, which is invalid.
Final Answer:
using (var file = new FileStream("file.txt", FileMode.Open)) { /* code */ } -> Option A
Quick Check:
Using syntax = parentheses + braces [OK]

Quick Trick: Using needs parentheses and braces for the resource block [OK]

Common Mistakes:

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