DotNet IOC Framework - Microsoft Unity介绍

一. 新建一个ASP.NET MVC4项目

二. 安装Microsoft Unity

1) 管理Nuget程序包

2）安装Unity3程序包

在你的App_Start文件夹里会多出来两个文件

三. 一个小例子

1）创建模型类

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Data.Entity;

using System.ComponentModel.DataAnnotations;

namespace TestUnity.Models

{

    public class Person

    {

        [ScaffoldColumn(false)]

        public int Id { get; set; }

        [Required]

        public string Name { get; set; }

        public int Age { get; set; }

        [Display(Name = "Contact Information")]

        public string ContactInfo { get; set; }

    }

}

2）建立自己的DbContext

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Data.Entity;

namespace TestUnity.Models

{

    public class MyContext : DbContext

    {

        public MyContext()

            : base("DefaultConnection")

        {

        }

        public DbSet<Person> Persons { get; set; }

    }

}

3）创建Repository模式类

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace TestUnity.Models

{

    public interface IPersonRepository : IDisposable

    {

        IEnumerable<Person> GetAll();

        void InsertorUpdate(Person contact);

        Person Find(int id);

        bool Delete(int id);

        void Save();

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Data;

namespace TestUnity.Models

{

    public class PersonRepository : IPersonRepository

    {

        private MyContext db = new MyContext();

        public IEnumerable<Person> GetAll()

        {

            return db.Persons.ToList();

        }

        public Person Find(int id)

        {

            return db.Persons.Find(id);

        }

        public bool Delete(int id)

        {

            try

            {

                Person person = Find(id);

                db.Persons.Remove(person);

                Save();

                return true;

            }

            catch (Exception)

            {

                return false;

            }

        }

        public void InsertorUpdate(Person person)

        {

            if (person.Id == default(int))

            {

                // New entity

                db.Persons.Add(person);

            }

            else

            {

                // Existing entity

                db.Entry(person).State = EntityState.Modified;

            }

        }

        public void Save()

        {

            db.SaveChanges();

        }

        public void Dispose()

        {

            db.Dispose();

        }

    }

}

4) 创建控制器

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mvc;

using TestUnity.Models;

namespace TestUnity.Controllers

{

    public class PersonController : Controller

    {

        private readonly IPersonRepository repository;

        public PersonController(IPersonRepository repository)

        {

            this.repository = repository;

        }

        public ActionResult Index()

        {

            var persons = repository.GetAll();

            return View(persons);

        }

        public ActionResult Details(int id)

        {

            var person = repository.Find(id);

            return View(person);

        }

        public ActionResult Create()

        {

            return View();

        }

        [HttpPost]

        public ActionResult Create(Person person)

        {

            try

            {

                repository.InsertorUpdate(person);

                repository.Save();

                return RedirectToAction("Index");

            }

            catch

            {

                return View();

            }

        }

        public ActionResult Edit(int id)

        {

            var person = repository.Find(id);

            return View(person);

        }

        [HttpPost]

        public ActionResult Edit(int id, Person model)

        {

            try

            {

                var person = repository.Find(id);

                repository.InsertorUpdate(person);

                repository.Save();

                return RedirectToAction("Index");

            }

            catch

            {

                return View();

            }

        }

        public ActionResult Delete(int id)

        {

            var person = repository.Find(id);

            return View(person);

        }

        [HttpPost, ActionName("Delete")]

        public ActionResult DeleteConfirmed(int id)

        {

            bool ret = repository.Delete(id);

            if (ret)

                return RedirectToAction("Index");

            return View();

        }

        protected override void Dispose(bool disposing)

        {

            if (disposing)

            {

                repository.Dispose();

            }

            base.Dispose(disposing);

        }

    }

}

5）配置Unity

using System;

using Microsoft.Practices.Unity;

using Microsoft.Practices.Unity.Configuration;

using TestUnity.Models;

namespace TestUnity.App_Start

{

    /// <summary>

    /// Specifies the Unity configuration for the main container.

    /// </summary>

    public class UnityConfig

    {

        #region Unity Container

        private static Lazy<IUnityContainer> container = new Lazy<IUnityContainer>(() =>

        {

            var container = new UnityContainer();

            RegisterTypes(container);

            return container;

        });

        /// <summary>

        /// Gets the configured Unity container.

        /// </summary>

        public static IUnityContainer GetConfiguredContainer()

        {

            return container.Value;

        }

        #endregion

        /// <summary>Registers the type mappings with the Unity container.</summary>

        /// <param name="container">The unity container to configure.</param>

        /// <remarks>There is no need to register concrete types such as controllers or API controllers (unless you want to

        /// change the defaults), as Unity allows resolving a concrete type even if it was not previously registered.</remarks>

        public static void RegisterTypes(IUnityContainer container)

        {

            // NOTE: To load from web.config uncomment the line below. Make sure to add a Microsoft.Practices.Unity.Configuration to the using statements.

            // container.LoadConfiguration();

            // TODO: Register your types here

            // container.RegisterType<IProductRepository, ProductRepository>();

            container.RegisterType<IPersonRepository, PersonRepository>();

        }

    }

}

6) 运行结果

巴特西

DotNet IOC Framework - Microsoft Unity介绍

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