C C++ Java Data Structure Python JavaScript CSS Ajax PL/SQL PHP Puzzles C programs C++ programs Java programs

Home » C# programs » C# file handling programs

C# program to read byte buffer from a file

In this C# program, we are going to learn how to read all bytes (byte buffer) from a file? To read all bytes, we are using ReadAllBytes() method of File class.
Submitted by IncludeHelp, on November 08, 2017

Given a file and we have to read it’s all bytes (byte buffer) using C# program.


This is a method of "File class, it is used to read all bytes from the given file.


Byte[] ReadAllBytes(string filename);


  1. filename - name of the file.

Return value:

This method return array of bytes, in which every element of array contains a byte.


using System;
using System.IO;

namespace ConsoleApplication1
    class Program
        static void Main()
            byte[] byteBuff ;

            byteBuff = File.ReadAllBytes("Sample.txt");

            Console.WriteLine("Data of file Sample.txt :");
            for (int i = 0; i < byteBuff.Length; i++)
                Console.Write(byteBuff[i] + " ");


Data of file Sample.txt :
1 2 3 4 5

Note: In above program, we need to remember, when we use "File" class, System.IO namespace must be included in the program.

You may also be interested in...

C/C++ Tips and Tricks...

Was this page helpful? YES NO

Are you a blogger? Join our Blogging forum.

Comments and Discussions