using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        string multipleLanguages = "Hello 你好 Привет สวัสดี ሰላም こんにちは ନମସ୍କାର নমস্কাৰ Բարեւ Ձեզ प्रणाम హలో مرحبًا";

​

        Encoding unicode = Encoding.Unicode;

        byte[] unicodeBytes = unicode.GetBytes(multipleLanguages);  // encoding

        string decodedString = unicode.GetString(unicodeBytes);  // decoding

​

        Console.WriteLine(decodedString);

    }

}