设计模式11-桥接模式

 1 namespace DesignModel.桥接模式
 2 {
 3 
 4     /// <summary>
 5     /// 操作抽象类
 6     /// </summary>
 7     abstract class FileOperate
 8     {
 9         public abstract void Operate(string type);
10     }
11 
12     class Export : FileOperate
13     {
14         public override void Operate(string type)
15         {
16             switch (type)//这里可做进一步优化,但不影响说明本模式
17             {
18                 default:
19                     Console.WriteLine("导出" + type);
20                     break;
21             }
22         }
23     }
24 
25     class Convent : FileOperate
26     {
27         public override void Operate(string type) => Console.WriteLine("转换" + type);
28 
29     }
30 
31 
32 
33     abstract class File
34     {
35         protected FileOperate fileOperate { get; set; }
36         public void SetOperate(FileOperate fo) => fileOperate = fo;
37 
38         public abstract void Operate();
39     }
40 
41     class Excel : File
42     {
43         public override void Operate() => fileOperate.Operate(nameof(Excel));
44     }
45 
46     class Text : File
47     {
48         public override void Operate() => fileOperate.Operate(nameof(Text));
49     }
50 
51 }
52 
53   static void 桥接模式()
54         {
55             File f = new Excel();
56             FileOperate fo = new Export();
57             f.SetOperate(fo);//给文件指定操作类型
58             f.Operate();//调用指定的操作
59         }