/// <summary>
/// 通过构造的方式，创建出用哪种策略对象
/// </summary>
/// <param name="type"></param>
public ContextStrategy(string type)
{
//工厂和策略的结合
switch (type)
{
case "正常收费":
CS = new CashNormal();
break;
case "打8折":
CS = new CashRebate("0.8");
break;
default:
CS = new CashNormal();
break;
}
}
public CashContext(string type)
{
switch (type)
{
case "正常收费":
cs = new CashNormal();
break;
case "满300返100":
cs = new CashReturn("300", "100");
break;
case "打8折":
cs = new CashRebate("0.8");
break;
default:
break;
}
}
/// <summary>
///
/// </summary>
/// <param name="type">收费策略，而不是收费的对象</param>
public CashContext(string type)
{
switch (type)
{
case "1":
CashNormal cs0 = new CashNormal(); //实例化具体策略的过程由客户端转移到Context类中。简单工厂的应用
cs = cs0;
break;
case "2":
CashReturn cs1 = new CashReturn("300", "100");
cs = cs1;
break;
case "3":
CashRebate cs2 = new CashRebate("0.8");
cs = cs2;
break;
}
}
public CashContext(string type)
{
switch (type)
{
case "正常收費":
var cs0 = new CashNormal();
cs = cs0;
break;
case "滿300送100":
var cr1 = new CashReturn("300", "100");
cs = cr1;
break;
case "打8折":
var cr2 = new CashRebate("0.8");
cs = cr2;
break;
}
}
public CashContext(string type)
{
switch (type)
{
case "正常收費":
cs = new CashNormal();
break;
case "滿300送100":
cs = new CashReturn("300", "100");
break;
case "打8折":
cs = new CashRebate("0.8");
break;
}
}
public static CashSuper createCashAccept(string type)
{
CashSuper cs = null;
switch (type)
{
case "正常收費":
cs = new CashNormal();
break;
case "滿300送100":
cs = new CashReturn("300", "100");
break;
case "打8折":
cs = new CashRebate("0.8");
break;
}
return(cs);
}
static void Main(string[] args)
{//還是工廠 CashFactory CashSuper會看到2個類別
double total = 0d;
CashSuper cs = CashFactory.createCashAccept("打8折");
double totalprice = 0d;
totalprice = cs.acceptCash(5000d) * 5;//price*num
total += totalprice;
Console.WriteLine(total);
//策略模式 只需要一個CashContext類別 收費演算法跟用戶端分離
CashContext cc = null;
cc = new CashContext("打8折");
totalprice = 0d;
totalprice = cc.GetResult(5000) * 5; //單價X數量
total += totalprice;
Console.WriteLine(total);
Console.ReadKey();
}
public static CashSuper createCashAccept(string type)
{
CashSuper cashSuper = null;
switch (type)
{
case "正常收費":
cashSuper = new CashNormal();
break;
case "打8折":
cashSuper = new CashRebate(0.8d);
break;
case "滿300送100":
cashSuper = new CashReturn(300d, 100d);
break;
}
return(cashSuper);
}
public static CashSuper createCashAccept(string type)
{
CashSuper cs = null;
switch (type)
{
case "正常收费":
cs = new CashNormal();
break;
case "满300返100":
CashReturn cr1 = new CashReturn("300", "100");
cs = cr1;
break;
case "打8折":
CashRebate cr2 = new CashRebate("0.8");
cs = cr2;
break;
}
return(cs);
}
public CashContext(CashSuper cashSuper)
{
this.cashSuper = cashSuper;
}