标签:container GetService typeof var new IOC public
Console.WriteLine("Hello, World!");
MyIocContainer services = new MyIocContainer();
services.AddTransient<ITestService, TestService>();
services.AddTransient<IMyService, MyService>();
var myService = services.GetService<IMyService>();
public class MyIocContainer
{
Dictionary<Type, Type> _container = new();
public void AddTransient<TInterface, TImplement>()
{
if (_container.ContainsKey(typeof(TInterface)))
{
_container.Remove(typeof(TInterface));
}
_container.Add(typeof(TInterface), typeof(TImplement));
}
public T GetService<T>()
{
return (T)GetService(typeof(T), _container);
}
private static object GetService(Type interfaceType, Dictionary<Type, Type> container)
{
if (!container.ContainsKey(interfaceType))
{
throw new Exception($"there is no implement type of {interfaceType.Name}");
}
var implementType = container[interfaceType];
var ctors = implementType.GetConstructors();
var constructor = ctors.OrderByDescending(x => x.GetParameters().Count()).FirstOrDefault();
if (constructor is null)
{
throw new ArgumentNullException(nameof(constructor));
}
var ctorParameters = constructor.GetParameters();
List<object> parameterList = new();
foreach (var p in ctorParameters)
{
var parameterInterfaceType = p.ParameterType;
parameterList.Add(GetService(parameterInterfaceType, container));
}
return constructor.Invoke(parameterList.ToArray());
}
}
public interface IMyService { }
public class MyService : IMyService
{
public MyService(ITestService testService)
{
}
}
public interface ITestService { }
public class TestService : ITestService
{
}
标签:container,GetService,typeof,var,new,IOC,public 来源: https://www.cnblogs.com/wosperry/p/15575247.html
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