public Cat(int id, string name, decimal weight, Toy toy)
{
this.id = id;
this.name = name;
this.weight = weight;
this.toy = toy;
}
public Cat()
{
id = 0;
name = String.Empty;
weight = 0m;
toy = null;
}
private static void Main(string[] args)
{
Toy toyforCat = new Toy(1, "little toy", 10m);
Cat catA = new Cat(1, "Miaomiao", 5.0m, toyforCat);
Cat catB = (Cat)catA.Clone();
Console.WriteLine("Hi, I'm catB, and my id is {0}, my name is {1}, and my weight is {2}, " +
"\nI have a toy, it's id is {3}, it's name is {4}, and it's price is {5}.",
catB.Id, catB.Name, catB.Weight, catB.Toy_.Id, catB.Toy_.Name, catB.Toy_.Price);
Console.WriteLine("catA {0} catB.", ReferenceEquals(catA, catB) ? "reference_equals with" : "reference NOT equals with" );
Console.WriteLine("catA's toy {0} catB's toy.", ReferenceEquals(catA.Toy_, catB.Toy_) ? "reference_equals with" : "reference NOT equals with");
Console.Read();
return;
}