Unity Framework - 将整数和字符串传递给已解析的对象

Question

有没有办法使用Unity框架将整数作为参数传递给构造函数或已解析的对象？

伪码..

IService svc = Container.Resolve<ConcreteService>()

在这种情况下,混凝土服务将是这样的......

public class ConcreteService
{
    public ConcreteService(int val)
    {
    }
}

另外,我需要在xml配置中执行此操作,而不是在代码中执行此操作.

提前致谢.

Answer 1

希望我理解你

   public class ConcreteService {

        public int Val { get; set; }

        public ConcreteService(int val) {
            Val = val;
        }
    }

现在让我们配置统一.

        var container = new UnityContainer();

        container.RegisterType<ConcreteService>();
        container.Configure<InjectedMembers>().ConfigureInjectionFor<ConcreteService>(new InjectionConstructor(1));

        container.RegisterType<ConcreteService>("for42");
        container.Configure<InjectedMembers>().ConfigureInjectionFor<ConcreteService>("for42",
                                                                                      new InjectionConstructor(42));
        container.RegisterType<ConcreteService>("for31");
        container.Configure<InjectedMembers>().ConfigureInjectionFor<ConcreteService>("for31",
                                                                                      new InjectionConstructor(31));

        Debug.WriteLine(container.Resolve<ConcreteService>().Val); //1
        Debug.WriteLine(container.Resolve<ConcreteService>("for42").Val); //42
        Debug.WriteLine(container.Resolve<ConcreteService>("for31").Val); //31

"for42"的等效配置是

Unity 1.4

<type type="ConcreteService"  name="for42">
          <typeConfig extensionType="Microsoft.Practices.Unity.Configuration.TypeInjectionElement,
                                     Microsoft.Practices.Unity.Configuration">
            <constructor>
              <param name="val" parameterType="int">
                <value value="42"/>
              </param>
            </constructor>           
          </typeConfig>
        </type>

Unity 2.0

它完全相同但没有冗余的typeConfig节点

<type type="ConcreteService"  name="for42">
        <constructor>
              <param name="val" parameterType="int">
                <value value="42"/>
              </param>
            </constructor>           
        </type>