1 namespace Wolfy.组合模式
 2 {
 3     /// <summary>
 4     /// 抽象接口类
 5     /// </summary>
 6     public abstract class Company
 7     {
 8         public Company(string name)
 9         { this.Name = name; }
10         public string Name { get; set; }
11         public abstract void Add(Company company);
12         public abstract void Remove(Company company);
13         public abstract void Display(int depth);
14     }
15 }

 1 namespace Wolfy.组合模式
 2 {
 3     /// <summary>
 4     /// 叶节点 子公司 部门类
 5     /// </summary>
 6    public  class ConcreteCompany:Company
 7     {
 8        private List<Company> list= new List<Company>();
 9        public ConcreteCompany(string name)
10            : base(name)
11        {  }
12        public override void Add(Company company)
13         {
14             list.Add(company);
15         }
16
17         public override void Remove(Company company)
18         {
19             list.Remove(company);
20         }
21
22         public override void Display(int depth)
23         {
24             StringBuilder sb = new StringBuilder();
25             for (int i = 0; i < depth; i++)
26             {
27                 sb.Append("-");
28             }
29             Console.WriteLine(sb.ToString()+base.Name);
30             Console.WriteLine();
31             foreach (Company item in list)
32             {
33                 item.Display(depth + 2);
34             }
35         }
36     }
37 }

 1 namespace Wolfy.组合模式
 2 {
 3     /// <summary>
 4     /// 叶节点类 人事部
 5     /// </summary>
 6     public class HRDepartment:Company
 7     {
 8         public HRDepartment(string name)
 9             : base(name)
10         { }
11         public override void Add(Company company)
12         {
13             throw new NotImplementedException();
14         }
15
16         public override void Remove(Company company)
17         {
18             throw new NotImplementedException();
19         }
20
21         public override void Display(int depth)
22         {
23
24             Console.WriteLine(new String('-', depth) + base.Name);
25
26             Console.WriteLine();
27         }
28     }
29 }

 1 namespace Wolfy.组合模式
 2 {
 3     /// <summary>
 4     /// 叶节点 财务部
 5     /// </summary>
 6     public class FinanceDepartment:Company
 7     {
 8         public FinanceDepartment(string name) : base(name) { }
 9         public override void Add(Company company)
10         {
11             throw new NotImplementedException();
12         }
13
14         public override void Remove(Company company)
15         {
16             throw new NotImplementedException();
17         }
18
19         public override void Display(int depth)
20         {
21             Console.WriteLine(new String('-', depth) + base.Name);
22             Console.WriteLine();
23         }
24     }
25 }

 1 namespace Wolfy.组合模式
 2 {
 3     class Program
 4     {
 5         static void Main(string[] args)
 6         {
 7             Company root = new ConcreteCompany("北京总公司");
 8             root.Add(new HRDepartment("总公司人力资源部"));
 9             root.Add(new FinanceDepartment("总公司财务部"));
10             Company shandongCom = new ConcreteCompany("山东分公司");
11             shandongCom.Add(new HRDepartment("山东分公司人力资源部"));
12             shandongCom.Add(new FinanceDepartment("山东分公司账务部"));
13             Company zaozhuangCom = new ConcreteCompany("枣庄办事处");
14             zaozhuangCom.Add(new FinanceDepartment("枣庄办事处财务部"));
15             zaozhuangCom.Add(new HRDepartment("枣庄办事处人力资源部"));
16             Company jinanCom = new ConcreteCompany("济南办事处");
17             jinanCom.Add(new FinanceDepartment("济南办事处财务部"));
18             jinanCom.Add(new HRDepartment("济南办事处人力资源部"));
19             shandongCom.Add(jinanCom);
20             shandongCom.Add(zaozhuangCom);
21             Company huadongCom = new ConcreteCompany("上海华东分公司");
22             huadongCom.Add(new HRDepartment("上海华东分公司人力资源部"));
23             huadongCom.Add(new FinanceDepartment("上海华东分公司账务部"));
24             Company hangzhouCom = new ConcreteCompany("杭州办事处");
25             hangzhouCom.Add(new FinanceDepartment("杭州办事处财务部"));
26             hangzhouCom.Add(new HRDepartment("杭州办事处人力资源部"));
27             Company nanjingCom = new ConcreteCompany("南京办事处");
28             nanjingCom.Add(new FinanceDepartment("南京办事处财务部"));
29             nanjingCom.Add(new HRDepartment("南京办事处人力资源部"));
30             huadongCom.Add(hangzhouCom);
31             huadongCom.Add(nanjingCom);
32             root.Add(shandongCom);
33             root.Add(zaozhuangCom);
34             root.Add(jinanCom);
35             root.Add(huadongCom);
36             root.Add(hangzhouCom);
37             root.Add(nanjingCom);
38             root.Display(0);
39             Console.Read();
40         }
41     }
42 }