[Solved] Which of the following is the correct syntax to open a file for reading using StreamReader in C#? - Ans: var reader = new StreamReader("file.txt"); | C Sharp (C#)

C Sharp (C#) - File IO

Which of the following is the correct syntax to open a file for reading using StreamReader in C#?

Avar reader = StreamReader.Read("file.txt");

Bvar reader = StreamReader.Open("file.txt");

Cvar reader = new FileReader("file.txt");

Dvar reader = new StreamReader("file.txt");

Step-by-Step Solution

Solution:

Step 1: Recall StreamReader constructor usage
StreamReader is instantiated with new and the file path as a string.
Step 2: Check other options for correctness
StreamReader.Open and StreamReader.Read do not exist; FileReader is not a C# class.
Final Answer:
var reader = new StreamReader("file.txt"); -> Option D
Quick Check:
StreamReader constructor uses new with file path [OK]

Quick Trick: Use 'new StreamReader("filename")' to open file for reading [OK]

Common Mistakes:

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Which of the following is the correct syntax to open a file for reading using StreamReader in C#?