Format float point as Hexadecimal in CSharp

using System;/*from  w w w  . jav a 2  s . co  m*/
class Sample 
{

    public static void Main() 
    {
       Console.WriteLine("(X) Hexadecimal:. . . . . . . {0:X}\n" + -123, -123.45f); 
    }
}