Mohanapriya R Mohanapriya R
Updated date May 05, 2024
In this article, we will explor string to byte array conversion in C#. Learn the basics of encoding, follow a simple program, and output.

Convert Strings to Byte Arrays in C#

Let's create a simple C# program to demonstrate string-to-byte array conversion using the UTF-8 encoding.

using System;
using System.Text;

class Program
    static void Main()
        // Input string
        string inputString = "Hello, Byte Array!";

        // Convert string to byte array using UTF-8 encoding
        byte[] byteArray = Encoding.UTF8.GetBytes(inputString);

        // Display the original string
        Console.WriteLine("Original String: " + inputString);

        // Display the byte array in hexadecimal format
        Console.Write("Byte Array (Hex): ");
        foreach (byte b in byteArray)
            Console.Write($"{b:X2} ");

        // Convert the byte array back to string
        string decodedString = Encoding.UTF8.GetString(byteArray);

        // Display the decoded string
        Console.WriteLine("\nDecoded String: " + decodedString);


Original String: Hello, Byte Array!
Byte Array (Hex): 48 65 6C 6C 6F 2C 20 42 79 74 65 20 41 72 72 61 79 21 
Decoded String: Hello, Byte Array!
  • The program starts by defining an input string.
  • It then converts the string to a byte array using the UTF-8 encoding.
  • The byte array is displayed in hexadecimal format.
  • Finally, the byte array is converted back to a string, and the decoded string is displayed.

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