标签：反射 code register oid array com 项目 span string
一、先来看看项目的简单结构
二、新增类库：DemoIOC.IRepository
1.在类库下新建接口：IDemoRepository.cs
public interface IDemoRepository
{
void Query();
}
三、新增类库：DemoIOC.Repository
1.在类库下新建类：DemoRepository.cs，继承接口：IDemoRepository.cs，并且实现接口的方法
public class DemoRepository : IDemoRepository
{
public void Query()
{
Console.WriteLine("DemoRepository 的Query方法");
}
}
四、新增类库：DemoIOC.IService
1.在类库下新建接口：IDemoService.cs
public interface IDemoService
{
void Query();
}
五、新增类库：DemoIOC.Service
1.在类库下新建类：DemoService.cs ，继续接口：IDemoService.cs，并实现接口方法
2.新增构造函数，并且传入参数：IDemoRepository，用于实现函数注入
public class DemoService : IDemoService
{
private readonly IDemoRepository _demoRepository;
public DemoService(IDemoRepository demoRepository)
{
_demoRepository = demoRepository;
}
public void Query()
{
_demoRepository.Query();
}
}
六、新增控制台程序：DemoIOC
1.新增类：ContainerIOC.cs 用于实现依赖注入
public class ContainerIOC
{
private readonly Dictionary<string, Type> dic = new Dictionary<string, Type>();
public void Register<TFrom, TTo>() where TTo : TFrom
{
var fromName = typeof(TFrom).FullName;
dic.Add(fromName, typeof(TTo));
}
public TFrom Resolve<TFrom>()
{
Type fromType = typeof(TFrom);
return (TFrom)ResolveObject<TFrom>(fromType);
}
private object ResolveObject<TFrom>(Type type)
{
var key = type.FullName;
Type toType = dic[key];
var ctors = toType.GetConstructors();
List<object> parameterList = new List<object>();
foreach (var ctor in ctors)
{
var parameters = ctor.GetParameters();
foreach (var parameter in parameters)
{
var parameterType = parameter.ParameterType;
var parameterInstance = ResolveObject<TFrom>(parameterType);
parameterList.Add(parameterInstance);
}
}
return Activator.CreateInstance(toType, parameterList.ToArray());
}
}
七、测试结果
class Program
{
static void Main(string[] args)
{
ContainerIOC container = new ContainerIOC();
container.Register<IDemoRepository, DemoRepository>();
container.Register<IDemoService, DemoService>();
IDemoService repository = container.Resolve<IDemoService>();
repository.Query();
}
}
标签：反射 code register oid array com 项目 span string
原文地址：https://www.cnblogs.com/GreatPerson/p/13617617.html
