static void Main(string[] args)
{
Console.Title = "Singleton Tasarım Deseni";
Ilac ilacim = Ilac.Instance;
ilacim.Firma = "Health Group";
Ilac ilacim2 = Ilac.Instance;
Console.WriteLine(ilacim2.Firma);
Console.ReadKey();
}
static Ilac()
{
instance = new Ilac();
}