C Sharp (C#) - File IOWhich of the following is the correct way to open a file for reading using StreamReader?AStreamReader.Open("file.txt")Bnew StreamReader.Read("file.txt")Cnew StreamReader("file.txt")DStreamReader.ReadFile("file.txt")Check Answer
Step-by-Step SolutionSolution:Step 1: Recall StreamReader constructorStreamReader is instantiated with the file path as a string argument.Step 2: Check syntax correctnessOnly new StreamReader("file.txt") is valid syntax to open a file for reading.Final Answer:new StreamReader("file.txt") -> Option CQuick Check:StreamReader open syntax = new StreamReader(path) [OK]Quick Trick: Use new StreamReader("filename") to open files [OK]Common Mistakes:MISTAKESUsing method calls instead of constructorConfusing StreamReader with static methodsIncorrect method names like ReadFile or Open
Master "File IO" in C Sharp (C#)9 interactive learning modes - each teaches the same concept differentlyLearnWhyDeepVisualTryChallengeProjectRecallTime
More C Sharp (C#) Quizzes Classes and Objects - Instance fields and state - Quiz 8hard Collections - Dictionary methods and access patterns - Quiz 8hard Exception Handling - Why exception handling is needed - Quiz 9hard Exception Handling - Exception hierarchy in .NET - Quiz 6medium File IO - Using statement with file streams - Quiz 10hard File IO - Reading text files - Quiz 3easy Interfaces - Why interfaces are needed - Quiz 14medium Interfaces - Default interface methods - Quiz 7medium Properties and Encapsulation - Get and set accessors - Quiz 1easy Strings and StringBuilder - String interpolation and formatting - Quiz 4medium