IoC~高效的Autofac

毫无疑问，微软最青睐的IoC容器不是spring.net,unity而是Autofac，因为他的高效，因为他的简洁，所以就边微软主导的orchard项目用的也是它，下面我用一个简单

的实例来说明一个Autofac的用法。

 1 /// <summary>
 2     /// DB Operate Interface
 3     /// </summary>
 4     public interface IRepository
 5     {
 6         void Get();
 7     }
 8     /// <summary>
 9     /// 对SQL数据源操作
10     /// </summary>
11     public class SqlRepository : IRepository
12     {
13         #region IRepository 成员
14 
15         public void Get()
16         {
17             Console.WriteLine("sql数据源");
18         }
19 
20         #endregion
21     }
22     /// <summary>
23     /// 对redis数据源操作
24     /// </summary>
25     public class RedisRepository : IRepository
26     {
27         #region IRepository 成员
28 
29         public void Get()
30         {
31             Console.WriteLine("Redis数据源");
32         }
33 
34         #endregion
35     }
36     /// <summary>
37     /// 数据源基类
38     /// </summary>
39     public class DBBase
40     {
41         public DBBase(IRepository iRepository)
42         {
43             _iRepository = iRepository;
44         }
45         public IRepository _iRepository;
46         public void Search(string commandText)
47         {
48             _iRepository.Get();
49         }
50     }

我们现在去调用它一样吧：

 1 class Program
 2     {
 3         static void Main(string[] args)
 4         {
 5             //直接指定实例类型
 6             var builder = new ContainerBuilder();
 7             builder.RegisterType<DBBase>();
 8             builder.RegisterType<SqlRepository>().As<IRepository>();
 9             using (var container = builder.Build())
10             {
11                 var manager = container.Resolve<DBBase>();
12                 manager.Search("SELECT * FORM USER");
13             }
14 
15             //通过配置文件实现对象的创建
16             var builder2 = new ContainerBuilder();
17             builder2.RegisterType<DBBase>();
18             builder2.RegisterModule(new ConfigurationSettingsReader("autofac"));
19             using (var container = builder2.Build())
20             {
21                 var manager = container.Resolve<DBBase>();
22                 manager.Search("SELECT * FORM USER");
23             }
24             //通过配置文件，配合Register方法来创建对象
25             var builder3 = new ContainerBuilder();
26             builder3.RegisterModule(new ConfigurationSettingsReader("autofac"));
27             builder3.Register(c => new DBBase(c.Resolve<IRepository>()));
28             using (var container = builder3.Build())
29             {
30                 var manager = container.Resolve<DBBase>();
31                 manager.Search("SELECT * FORM USER");
32             }
33 
34             Console.ReadKey();
35         }
36     }

怎么样，搞简单吧，下一讲我将针对orchard项目，说说Autofac在具体项目中的使用。