Displaying Numbers in Native Scripts C#

For one of my web app i had to display numbers in native script, arabic in my case. After googling around, i found these two useful websites

UTF8Encoding.GetDecoder Method (MSDN)
JavaScript Unicode Charts

Navigate to the JavaScript Unicode Charts page, then select your preferred script from the dropdown menu(i'll follow the example for arabic). Then you'll be shown a Unicode script chart of your selected langauge.

The highlighted row in the above screenshot is the arabic numerals and D9A0 is the utf-8 encoding value for the arabic number 0, D9A5 will be the arabic number 5.




Below is the source code for converting integers to native scripts. This code supports converting numbers to Arabic, Hindi, Teluge & Urdu scripts.

using System;
using System.Collections.Generic;
using System.Text;

namespace UnicodeChars
{
    public enum Language
    {
        ARABIC, HINDI, TELUGU, URDU
    }
    public class UTF8
    {
        public static String encode(long number, Language lang)
        {
            Decoder utf8decoder = Encoding.UTF8.GetDecoder();
            StringBuilder sb = new StringBuilder();
            byte[] utf8Index = getUTF8Index(lang);
            char[] encodedValue = new char[1];
            char[] numberArray = number.ToString().ToCharArray();
            int charsDecodedCount = 0;
            int temp = utf8Index[utf8Index.Length - 1];
            foreach (char c in numberArray)
            {
                utf8Index[utf8Index.Length - 1] = Convert.ToByte((float)temp + (Char.GetNumericValue(c)));
                charsDecodedCount = utf8decoder.GetChars(utf8Index, 0, utf8Index.Length,encodedValue, 0);
                sb.Append(encodedValue[0]);
            }

            return sb.ToString();
        }

        private static byte[] getUTF8Index(Language lang)
        {
            byte[] index = null;
            switch(lang)
            {
                case Language.ARABIC:
                    index = new byte[] { 0xD9, 0xA0 };
                    break;
                case Language.HINDI:
                    index = new byte[] { 0xE0, 0xA5, 0xA6 };
                    break;
                case Language.TELUGU:
                    index = new byte[] { 0xE0, 0xB3, 0xA6 };
                    break;
                case Language.URDU:
                    index = new byte[] { 0xDB, 0xB0 };
                    break;
            }
            return index;
        }
    }
}

Usage: