// 具体请求处理方法
public override void ProcessRequest(PurchaseRequest request)
{
if (request.Amount < 100000)
{
// 处理请求
Console.WriteLine("副总裁 {0} 审批采购单：{1}，金额：{2} 元，采购目的：{3}。",
this.name, request.Number, request.Amount, request.Purpose);
}
else
{
// 如果处理不了，转发请求给更高层领导
this.successor.ProcessRequest(request);
}
}
public static void Main(string[] args)
{
// 创建职责链
Approver andy = new Director("Andy");
Approver jacky = new VicePresident("Jacky");
Approver ashin = new President("Ashin");
Approver meeting = new Congress("Congress");
andy.SetSuccessor(jacky);
jacky.SetSuccessor(ashin);
ashin.SetSuccessor(meeting);
// 构造采购请求单并发送审批请求
PurchaseRequest request1 = new PurchaseRequest(45000.00,
"MANULIFE201706001",
"购买PC和显示器");
andy.ProcessRequest(request1);
PurchaseRequest request2 = new PurchaseRequest(60000.00,
"MANULIFE201706002",
"2017开发团队活动");
andy.ProcessRequest(request2);
PurchaseRequest request3 = new PurchaseRequest(160000.00,
"MANULIFE201706003",
"2017公司年度旅游");
andy.ProcessRequest(request3);
PurchaseRequest request4 = new PurchaseRequest(800000.00,
"MANULIFE201706004",
"租用新临时办公楼");
andy.ProcessRequest(request4);
Console.ReadKey();
}
// 抽象请求处理方法 public abstract void ProcessRequest(PurchaseRequest request);
// 具体请求处理方法
public override void ProcessRequest(PurchaseRequest request)
{
// 处理请求
Console.WriteLine("董事会 {0} 审批采购单：{1}，金额：{2} 元，采购目的：{3}。",
this.name, request.Number, request.Amount, request.Purpose);
}