File I/O operations

The System.IO namespace contains classes for handling file operations. Standard static methods on the File class allow reading and writing in single operations.

using System;
using System.IO;

class Program {
    static void Main() {
        string path = "sky.txt";
        File.WriteAllText(path, "starry");
        string content = File.ReadAllText(path);
        Console.WriteLine(content);
    }
}

How it reads

• File.WriteAllText(...) writes a string to a file (creates or overwrites it)
• File.ReadAllText(...) reads all text from a file into a single string

Cloud tip: Use static classes like File for quick, simple operations. For advanced streaming, use StreamReader or StreamWriter.