File Handling and Input Output in C Sharp MCQ question and answer with solution

Section 1 Section 2

31.
Which class in C# is used to represent a stream of characters to be written to a file?

A. FileReader

B. TextWriter

C. TextReader

D. StreamWriter

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32.
What is the purpose of the Directory.GetFiles() method in C#?

A. Moves all files from one directory to another

B. Deletes all files in a specified directory

C. Retrieves the names of files in a specified directory that match a specified pattern

D. Retrieves the names of all files in a specified directory

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33.
In C#, what is the method used to append lines to a file?

A. File.AppendLines()

B. File.Append()

C. File.WriteAllLines()

D. File.WriteAllText()

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34.
What does the File.ReadAllBytes() method do in C#?

A. Reads all lines from a file into a string

B. Writes all bytes to a file from a byte array

C. Checks if a file exists

D. Reads all bytes from a file into a byte array

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35.
In C#, which class is used to manipulate paths in a platform-independent manner?

A. Path

B. Pathname

C. FilePath

D. FileHandler

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36.
In C#, which method is used to read all lines from a file and return them as an array of strings?

A. File.ReadAllText()

B. File.ReadAllBytes()

C. File.ReadAllLines()

D. File.ReadLines()

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37.
What happens if you attempt to read from a file that is already open by another process in C#?

A. FileInUseException is thrown

B. IOException is thrown

C. InvalidOperationException is thrown

D. None of the above

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38.
What is the purpose of the File.Open() method in C#?

A. Opens an existing file for appending

B. Opens an existing file for writing

C. Opens an existing file or creates a new file

D. Opens an existing file for reading

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39.
What is the purpose of the File.GetLastWriteTime() method in C#?

A. Retrieves the date and time when the specified file was last accessed

B. Retrieves the date and time when the specified file was created

C. Retrieves the date and time when the specified file was last modified

D. Retrieves the date and time when the specified file was last written to

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40.
In C#, which method is used to delete a directory, and optionally any subdirectories and files in the directory?

A. Directory.Delete()

B. Directory.Remove()

C. Directory.Erase()

D. Directory.Clean()

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File Handling and Input Output in C Sharp MCQ question and answer with solution | C# Program MCQs

31. Which class in C# is used to represent a stream of characters to be written to a file?

Answer & Solution

32. What is the purpose of the Directory.GetFiles() method in C#?

Answer & Solution

33. In C#, what is the method used to append lines to a file?

Answer & Solution

34. What does the File.ReadAllBytes() method do in C#?

Answer & Solution

35. In C#, which class is used to manipulate paths in a platform-independent manner?

Answer & Solution

36. In C#, which method is used to read all lines from a file and return them as an array of strings?

Answer & Solution

37. What happens if you attempt to read from a file that is already open by another process in C#?

Answer & Solution

38. What is the purpose of the File.Open() method in C#?

Answer & Solution

39. What is the purpose of the File.GetLastWriteTime() method in C#?

Answer & Solution

40. In C#, which method is used to delete a directory, and optionally any subdirectories and files in the directory?

Answer & Solution

Read More Section(File Handling and Input Output in C Sharp)

31.
Which class in C# is used to represent a stream of characters to be written to a file?

32.
What is the purpose of the Directory.GetFiles() method in C#?

33.
In C#, what is the method used to append lines to a file?

34.
What does the File.ReadAllBytes() method do in C#?

35.
In C#, which class is used to manipulate paths in a platform-independent manner?

36.
In C#, which method is used to read all lines from a file and return them as an array of strings?

37.
What happens if you attempt to read from a file that is already open by another process in C#?

38.
What is the purpose of the File.Open() method in C#?

39.
What is the purpose of the File.GetLastWriteTime() method in C#?

40.
In C#, which method is used to delete a directory, and optionally any subdirectories and files in the directory?