C#L12 Flashcards
What is a text file?
A human-readable file storing data as text.
What is a stream in C#?
An ordered sequence of bytes for reading/writing data.
What are the two main types of streams?
Input stream (reading) and output stream (writing).
Name some common stream operations.
Open, read, write, seek, close.
What namespace contains stream classes in C#?
System.IO
What is the base class for all streams in .NET?
Stream
Name two abstract classes used for text streams.
TextReader and TextWriter
What does ReadLine() do?
Reads one line from a text stream.
What does ReadToEnd() do?
Reads the entire stream as a string.
How do you create a StreamReader?
StreamReader reader = new StreamReader(“file.txt”);
How do you read a text file line by line?
Use a loop with ReadLine().
What class is used for writing text files?
StreamWriter
How do you create a StreamWriter?
StreamWriter writer = new StreamWriter(“file.txt”);
What method writes text with a newline?
WriteLine()
Why should you close a stream?
To release system resources.
What is the purpose of Peek() in StreamReader?
Checks the next character without moving the cursor.
How do you ensure a writer closes automatically?
Use using(writer) { … }.
Can StreamReader and StreamWriter work with binary files?
No, they are for text files only.
What is the difference between Write() and WriteLine()?
Write() writes text without a newline; WriteLine() adds a newline.
What happens if you try to read a closed stream?
An exception is thrown.
