单页网站与传统网站的区别,建设网站 深圳,花生棒 做网站,网站建设主机的功能转自#xff1a;http://www.cnblogs.com/yunfeifei/p/3927663.html 前面说完了导入和导出的几种方法#xff0c;如果大家细心的话会注意到前面我们导出的都是类#xff0c;那么方法和属性能不能导出呢#xff1f;#xff1f;#xff1f;答案是肯定的#xff0c;下面就来… 转自http://www.cnblogs.com/yunfeifei/p/3927663.html 前面说完了导入和导出的几种方法如果大家细心的话会注意到前面我们导出的都是类那么方法和属性能不能导出呢答案是肯定的下面就来说下MEF是如何导出方法和属性的。 还是前面的代码第二篇中已经提供了下载链接大家可以下载学习。 首先来说导出属性因为这个比较简单和导出类差不多先来看看代码主要看我加注释的地方MusicBook.cs中的代码如下 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel.Composition;namespace MEFDemo
{[Export(MusicBook)]public class MusicBook : IBookService{//导出私有属性[Export(typeof(string))]private string _privateBookName Private Music BookName;//导出公有属性[Export(typeof(string))]public string _publicBookName Public Music BookName;public string BookName { get; set; }}[Export(MathBook, typeof(IBookService))]public class MathBook : IBookService{public string BookName { get; set; }public string GetBookName(){return MathBook;}}[Export(HistoryBook, typeof(IBookService))]public class HistoryBook : IBookService{public string BookName { get; set; }public string GetBookName(){return HistoryBook;}}} program.cs中的代码如下 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
using System.ComponentModel.Composition;
using System.ComponentModel.Composition.Hosting;namespace MEFDemo
{class Program{[ImportMany(MathBook)]public IEnumerableobject Services { get; set; }//导入属性这里不区分public还是private[ImportMany]public Liststring InputString { get; set; }static void Main(string[] args){Program pro new Program();pro.Compose();if (pro.Services ! null){foreach (var s in pro.Services){var ss (IBookService)s;Console.WriteLine(ss.GetBookName());}}foreach (var str in pro.InputString){Console.WriteLine(str);}Console.Read();}private void Compose(){var catalog new AssemblyCatalog(Assembly.GetExecutingAssembly());CompositionContainer container new CompositionContainer(catalog);container.ComposeParts(this);}}
} 下面还用foreach遍历输出属性的值运行即可查看到结果。最后我会附上源码供大家下载这里就不再截图了。 下面说导出方法吧同理无论是公有方法还是私有方法都是可以导出的MusicBook代码如下 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel.Composition;namespace MEFDemo
{[Export(MusicBook)]public class MusicBook : IBookService{//导出私有属性[Export(typeof(string))]private string _privateBookName Private Music BookName;//导出公有属性[Export(typeof(string))]public string _publicBookName Public Music BookName;public string BookName { get; set; }//导出公有方法[Export(typeof(Funcstring))]public string GetBookName(){return MusicBook;}//导出私有方法[Export(typeof(Funcint, string))]private string GetBookPrice(int price){return $ price;}}[Export(MathBook, typeof(IBookService))]public class MathBook : IBookService{public string BookName { get; set; }public string GetBookName(){return MathBook;}}[Export(HistoryBook, typeof(IBookService))]public class HistoryBook : IBookService{public string BookName { get; set; }public string GetBookName(){return HistoryBook;}}} program中的代码如下 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
using System.ComponentModel.Composition;
using System.ComponentModel.Composition.Hosting;namespace MEFDemo
{class Program{[ImportMany(MathBook)]public IEnumerableobject Services { get; set; }//导入属性这里不区分public还是private[ImportMany]public Liststring InputString { get; set; }//导入无参数方法[Import]public Funcstring methodWithoutPara { get; set; }//导入有参数方法[Import]public Funcint,string methodWithPara { get; set; }static void Main(string[] args){Program pro new Program();pro.Compose();if (pro.Services ! null){foreach (var s in pro.Services){var ss (IBookService)s;Console.WriteLine(ss.GetBookName());}}foreach (var str in pro.InputString){Console.WriteLine(str);}//调用无参数方法if (pro.methodWithoutPara ! null){Console.WriteLine(pro.methodWithoutPara());}//调用有参数方法if (pro.methodWithPara ! null){Console.WriteLine(pro.methodWithPara(3000));}Console.Read();}private void Compose(){var catalog new AssemblyCatalog(Assembly.GetExecutingAssembly());CompositionContainer container new CompositionContainer(catalog);container.ComposeParts(this);}}
} 导入导出方法用到了FuncT委托当然没有返回值的话可以用ActionT委托关于委托这里就不多说了大家可以自行百度。
