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CompositionContainer学习
分类：C#
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApplication1{using System.ComponentModel.Composition;using System.ComponentModel.Composition.Hosting;using System.Reflection;public interface IBookService{string BookName { get; set; }string GetBookName();}#region//[Export(typeof(IBookService))] //将类声明导出为IBookService接口类型//[Export("契约名")] //默认的导出类型是object类型[Export("MusicBook", typeof(IBookService))] //契约名public class MusicBook : IBookService{public string BookName { get; set; }public string GetBookName(){return "MusicBook";}}[Export("MusicBook", typeof(IBookService))]public class MathBook : IBookService{public string BookName { get; set; }public string GetBookName(){return "MathBook";}}[Export("MusicBook", typeof(IBookService))]public class HistoryBook : IBookService{public string BookName { get; set; }public string GetBookName(){return "HistoryBook";}}#endregionclass Program{//[Import]//[Import("MusicBook")] //使用[Import]导入刚刚导出的MusicBook[ImportMany("MusicBook")]public IEnumerable<IBookService> Service { get; set; }//public IBookService Service { get; set; }private void Compose(){var catalog = new AssemblyCatalog(Assembly.GetExecutingAssembly());CompositionContainer container = new CompositionContainer(catalog);container.ComposeParts(this);}static void Main(string[] args){Program pro = new Program();pro.Compose();if (pro.Service != null){//Console.WriteLine(pro.Service.GetBookName());foreach (var s in pro.Service)Console.WriteLine(s.GetBookName());}Console.Read();}}}
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