在ASP.NET 中使用 Unity Application Block – 示例（提供代码下载）

在ASP.NET 中使用 Unity Application Block – 示例（提供代码下载）

下面的示例演示在ASP.NET Web Application 中使用 Unity 依赖注入容器。下载ASP.NetWeb Application源码！！！

具体步骤如下：

1. 创建IUnityContainer 接口文件 – IUnity.cs

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Practices.Unity;

namespace UnityASPNET
{
    interface IUnity
    {
            IUnityContainer Container { get; }
    }
}

2. 基于演示的需要，创建ILogger接口 – ILogger.cs

namespace Microsoft.Practices.Unity.Tests.TestObjects
{
    // A dummy interface to support testing type mapping
    interface ILogger
    {

    }
}

3. 创建ILooger接口的实现类 WebLogger.cs

namespace Microsoft.Practices.Unity.Tests.TestObjects
{
    // A dummy class to support testing type mapping
    public class WebLogger : ILogger
    {
    }
}

4. 创建 ASP.NET Global.ascx

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.SessionState;
using Microsoft.Practices.Unity;
using Microsoft.Practices.Unity.Tests.TestObjects;

namespace UnityASPNET
{
    public class Global : System.Web.HttpApplication, IUnity
    {
        private static UnityContainer _container; // private 静态成员变量

        public static IUnityContainer Container // public静态成员变量Container
        {
            get { return _container; }
        }

        IUnityContainer IUnity.Container // 实现 IUnity 接口，返回Continer对象
        {
            get { return Container; }
        }

        protected void Application_Start(object sender, EventArgs e)
        {
            Initialize();
        }

        private static void Initialize()
        {
            // create the container at the application initialization phase.
            if (_container == null)
                _container = new UnityContainer(); // 初始化静态成员变量_container

            // register type 注册ILogger 映射
            _container.RegisterType<ILogger, WebLogger>();
        }
    }
}

5. 在ASP.NET 页面调用 IUnityContainer 对象

        protected void Page_Load(object sender, EventArgs e)
        {
            IUnity UnityCtx = Context.ApplicationInstance as IUnity;           
            // This should find the WebLogger when trying resolve the ILogger
            ILogger logger = UnityCtx.Container.Resolve<ILogger>();           
            Label1.Text = "Found following ILogger from unity container : "+logger.GetType().FullName.ToString();
        }

下载ASP.NET Web Application源码！！！

Source URL:
http://www.codeplex.com/unitycontributions/Thread/View.aspx?ThreadId=27698 by alexanderQX.