Convert String to / from Byte Array examples | C# Examples
This tutorial explains about following things in C#
- How to parse String to Byte Array
- How to convert Byte Array to String in C Sharp?
- Convert String array to byte array
Convert String to Byte Array in C# with examples
Multiple ways to convert String to Byte Array
The first way, use Encoding.ASCII.GetBytes
First, use the System.Text namespace into your code
byte[] bytes = Encoding.ASCII.GetBytes("Hello");Here is an example
using System;
using System.Text;
public class Program {
public static void Main() {
byte[] bytes = Encoding.ASCII.GetBytes("Hello");
string str = Encoding.ASCII.GetString(bytes);
Console.WriteLine(str);
}
}This approach uses default encoding such as ASCII, But not UTF-16, It uses 7 bit.
Another way using System.Text.Encoding.UTF8,
using System;
using System.Text;
public class Program {
public static void Main() {
// Convert string to byte array
ReadOnlySpan<byte> bytes1 = System.Text.Encoding.UTF8.GetBytes("hello1");
// Convert byte array to string
string str = Encoding.ASCII.GetString(bytes1);//hello1
Console.WriteLine(str);
}
}The third way, In C# 11 version, uses UTF-8 string literals syntax.
Append u8 to a string converted into a byte array.
using System;
using System.Text;
public class Program {
public static void Main() {
// Convert string to byte array
ReadOnlySpan<byte> bytes2 = "hello3"u8;
// Convert byte array to string
string str = Encoding.ASCII.GetString(bytes2); //hello3
Console.WriteLine(str);
}
}The fourth way, assign the string variable to a byte array, It casts and converts to the array.
string str = "welcome";
byte[] array = str;Byte Array to String in C# with examples
Multiple ways to convert byte array to String
One way using Encoding.ASCII.GetString method
string str = Encoding.ASCII.GetString(bytes); // helloIt supports ASCII, but not UTF-8 or UTF-16 encoding.
The second way, use System.Text.Encoding.UTF8.GetString
Takes byte array and return string
using System;
using System.Text;
public class Program {
public static void Main() {
byte[] bytes = Encoding.ASCII.GetBytes("Hello");
ReadOnlySpan<byte> bytes1 = System.Text.Encoding.UTF8.GetBytes("hello1");
string str = System.Text.Encoding.UTF8.GetString(bytes1);
Console.WriteLine(str); // hello1
}
}