Encoding: unicode ascii getbytes getstring

using System;
using System.IO;
using System.Text;
 
 
class MainClass
{
    public static void Main()
    {
        using (StreamWriter output = new StreamWriter("output.txt"))
        {
            string srcString = "Area = \u03A0r^2";
            output.WriteLine("Source Text : " + srcString);
 
 
            byte[] utf16String = Encoding.Unicode.GetBytes(srcString);
            output.WriteLine("UTF-16 Bytes: {0}",BitConverter.ToString(utf16String)); 
 
 
            byte[] utf8String = Encoding.UTF8.GetBytes(srcString);
            byte[] asciiString = Encoding.ASCII.GetBytes(srcString);
 
 
            output.WriteLine("UTF-8 Bytes: {0}",
            BitConverter.ToString(utf8String));
            output.WriteLine("ASCII Bytes: {0}",
            BitConverter.ToString(asciiString));
 
 
            output.WriteLine("UTF-8 Text : {0}",Encoding.UTF8.GetString(utf8String));
            output.WriteLine("ASCII Text : {0}",Encoding.ASCII.GetString(asciiString));
        }
 
 
    }
}