Use StreamReader to read a line from a text file : StreamReader « File Directory Stream « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. File Directory Stream
3. StreamReader

using System;
using System.IO;

class MainClass
{
    public static void Main(string[] args)
    {
            
            string filename = "c:\\file.txt";
            
            FileStream f = new FileStream(filename, FileMode.Open);
            StreamReader stream = new StreamReader(f);
            
            string line;
            line = stream.ReadLine();    // header line
            Console.WriteLine(line);
            
    }
}