Convert Decimal to the equivalent 8-bit unsigned integer in CSharp

using System;// www  .  java2 s. co m

class MainClass
{

    public static void Main()
    {
        object SByteValue = null;

        try
        {
            SByteValue = decimal.ToSByte(123.123m);
            Console.WriteLine(SByteValue);
        }
        catch (Exception ex)
        {
            SByteValue = null;
        }
    }
}