Convert string to byte array and byte array to string (C#)

To convert from string into byte array, we can use Encoding class to convert into specific format such as ASCII or UTF8.

Example: 

using System.Text;
...
string str = "Hello, World!!!";
byte[] byteData = Encoding.UTF8.GetBytes(str);

On the opposite way, to convert back from byte array into string, we can simply use StreamReader to read it from MemoryStream.

Example:

string output = string.Empty;
byte[] byteData = ...;
using (var memoryStream = new MemoryStream(byteData))
{
     using (var streamReader = new StreamReader(memoryStream))
     {
          output = streamReader.readToEnd();
     }
}