using System;

using System.Text;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        byte[] attrVal = new byte[] {59, 5, 0, 2 , 241, 6, 115};

        Console.WriteLine(BitConverter.ToInt16(attrVal, 0));

        var hexString = ByteArrayToString(attrVal);

        Console.WriteLine(hexString);   

        var start_number = Int64.Parse( hexString, NumberStyles.HexNumber );

        Console.WriteLine(start_number);    

    }

    public static string ByteArrayToString(byte[] ba)

    {

      StringBuilder hex = new StringBuilder(ba.Length * 2);

      foreach (byte b in ba)

        hex.AppendFormat("{0:x2}", b);

      return hex.ToString();

    }

}