open file stream c# code example

Example 1: c# read file stream

using System;
using System.IO;
using System.Text;

namespace StreamReaderReadToEnd
{
    class Program
    {
        static void Main(string[] args)
        {
            var path = @"C:\Users\Jano\Documents\thermopylae.txt";

            using var fs = new FileStream(path, FileMode.Open, FileAccess.Read);
            using var sr = new StreamReader(fs, Encoding.UTF8);
            
            string content = sr.ReadToEnd();

            Console.WriteLine(content);
        }
    }
}

Example 2: opening a file in c#

using System;
using System.IO;
using System.Text;

class Test
{
    public static void Main()
    {
        // Create a temporary file, and put some data into it.
        string path = "test.txt";
        using (FileStream fs = File.Open(path, FileMode.Open, FileAccess.Write, FileShare.None))
        {
            Byte[] info = new UTF8Encoding(true).GetBytes("This is some text in the file.");
            // Add some information to the file.
            fs.Write(info, 0, info.Length);
        }

        // Open the stream and read it back.
        using (FileStream fs = File.Open(path, FileMode.Open))
        {
            byte[] b = new byte[1024];
            UTF8Encoding temp = new UTF8Encoding(true);

            while (fs.Read(b,0,b.Length) > 0)
            {
                Console.WriteLine(temp.GetString(b));
            }
        }
    }
}

Example 3: c# read file stream

//this will get a string with all the text from the file
var fileText = File.ReadAllText(@"path\to\my\file.txt");

//this will get all of the lines of the file as an string[]
var fileLines = File.ReadAllLines(@"path\to\my\file.txt");