FormatoDecimal.cs

using System;

namespace Articulo.Pregunta.P1720
{
    public class FormatoDecimal
    {
        public static void Main()
        {
            Console.WriteLine ();

            // Definición variable decimal:
            decimal valor = 951753456.951753456M;
            Console.WriteLine (valor);

            Console.WriteLine ();

            Console.WriteLine (valor.ToString("#.##"));
            Console.WriteLine (String.Format("{0:0.00}", valor));
            Console.WriteLine (valor.ToString("N2"));
            Console.WriteLine ("{0:C}", valor);

            Console.WriteLine ();
        }
    }
}