Convert decimal To double in CSharp

//from   w  w  w. ja  v a  2  s .  com
using System;

class MainClass
{
    public static void DecimalToSgl_Dbl(decimal argument)
    {
        object SingleValue;
        object DoubleValue;

        SingleValue = decimal.ToSingle(argument);

        DoubleValue = decimal.ToDouble(argument);

        Console.WriteLine(SingleValue);
        Console.WriteLine( DoubleValue);
    }

    public static void Main()
    {

        DecimalToSgl_Dbl(123M);
    }
}