c# 依賴注入之---反射(轉)

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詳細請看http://www.cnblogs.com/leoo2sk/archive/2009/06/17/1504693.html

定義一個介面，和兩個類（實現該介面）

IButton:

 1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Threading.Tasks; 6  7 namespace ReflectionInjection 8 { 9     internal interface IButton10     {11         string ShowInfo();12     }13 }

WindowsButton：

 1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Threading.Tasks; 6  7 namespace ReflectionInjection 8 { 9     internal sealed class WindowsButton : IButton10     {11         public string Description { get; private set; }12         public WindowsButton()13         {14             this.Description = "Windows風格按鈕";15         }16         public string ShowInfo()17         {18             return this.Description;19         }20     }21 }

MacButton:

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ReflectionInjection{    internal sealed class MacButton : IButton    {        public String Description { get; private set; }        public MacButton()        {            this.Description = " Mac風格按鈕";        }        public string ShowInfo()        {            return this.Description;        }    }}

ReflectionFactory:

using System;using System.Collections.Generic;using System.Linq;using System.Reflection;using System.Text;using System.Threading.Tasks;using System.Xml;namespace ReflectionInjection{    internal static class ReflectionFactory    {        private static string _buttonType;        static ReflectionFactory()        {            XmlDocument xmlDoc = new XmlDocument();            xmlDoc.Load(Environment.CurrentDirectory + "\\Config.xml");            XmlNode xmlNode = xmlDoc.ChildNodes[1].ChildNodes[1];            _buttonType = xmlNode.ChildNodes[0].Value;                    }        public static IButton MakeButton()        {            return Assembly.Load("ReflectionInjection").CreateInstance("ReflectionInjection." + _buttonType) as IButton;        }    }}

主入口：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ReflectionInjection{    class Program    {        static void Main(string[] args)        {            //ReflectionFactory            IButton button = ReflectionFactory.MakeButton();            Console.WriteLine("建立 " + button.ShowInfo());            Console.ReadLine();        }    }}

 xml:

<?xml version="1.0" encoding="utf-8" ?><config>  <window>MacWindow</window>  <button>MacButton</button>  <textBox>MacTextBox</textBox></config>

 

c# 依賴注入之---反射(轉)