change chartset from Code

You can use Like this Code

  private string ConvertUnicode(string Str)
        {
            Encoding latinEncoding = Encoding.GetEncoding("Windows-1252");
            Encoding ArabicEncoding = Encoding.GetEncoding("Windows-1256");
            byte[] latinBytes = latinEncoding.GetBytes(Str);
            return  ArabicEncoding.GetString(latinBytes);
        }