//構造器1
public Products(int id)
{
_Id = id;
}
//構造器2，使用this來調用構造器1
public Products(int id, string Name, string Band)
: this(id)
{
_ProductName = Name;
_ProductBand = Band;
}

static Products() { }//靜態構造器
public Products() { }

//產品的集合List
List<Products> ListProduct = new List<Products>()
{
new Products() { _Id = 1, _ProductName = "whc" },//使用{}是調有用初始化器，對屬性進行初始化
new Products() { _Id = 1, _ProductName = "whc1", _ProductBand = "ctbu" },
new Products() { _Id = 1, _ProductName = "whc2", _ProductBand = "ctbu" }
};

class DelegateClass
{
//一個泛型的委托，可以不同類型的參數進行處理
public delegate void AlculateMethod<T>(T first, T second);
}
class MehtodConllection
{
public void AlculateAdd<T>(T first, T second)
{
string third = first.ToString() + second.ToString();
System.Console.WriteLine(third);
}
public void AlculateDelete(int first, int second)
{
System.Console.WriteLine(first - second);
}
public void AlculateAddOther<T>(T first, T second)
{
string third = first.ToString() + "Hello Word" + second.ToString();
System.Console.WriteLine(third);
}
}
private static void _Demo4()
{
//方法的集合
MehtodConllection mc = new MehtodConllection();
//泛型的委托聲明
DelegateClass.AlculateMethod<string> Demo = null;
//添加委托方法
Demo += mc.AlculateAdd<string>;
//
Demo += mc.AlculateAddOther<string>;
//調用方法,所有在委托中的方法都能被執行
Demo("str", "sterte");
}

class Cat
{
//定義委托方法
public delegate void ActionMethod();
//聲明事件委托
public event ActionMethod amd;
//觸發事件
public void CatShout()
{
System.Console.WriteLine("貓叫了，事件觸發了！！！");
amd();
}
}

private static void _Demo15() {
Cat cat = new Cat();
HostPerson hp = new HostPerson();
Mouse mouse = new Mouse();
cat.amd += mouse.runing;
cat.amd += hp.WeekUp;
cat.CatShout();
}