MvvmLight SimpleIoc和多种具体实现 [英] MvvmLight SimpleIoc and multiple concrete implementations
问题描述
使用 SimpleIoc
我要注册 IProvider
的多个实现,是这样的:
SimpleIoc.Default.Register< IProvider,Provider1>();
SimpleIoc.Default.Register< IProvider,Provider2之间>();
因此,我可以做的:
VAR提供商= SimpleIoc.GetAllInstances< IProvider>();
有没有办法做这样的事情?如果我尝试它看作是我得到的已经有对 IProvider
注册一类。
公共接口IProvider {} $:/ DIV> 您可以通过实现一个基类,使用键值注册办呢b $ b酒店的公共抽象类BaseProvider:IProvider {}
公共类Provider1:BaseProvider {}
公共类Provider2之间:BaseProvider {}
[测试]
公共无效RegisterTwoImplementations_GetAllInstances_ReturnsBothInstances()
{
SimpleIoc.Default.Register< Provider1>();
SimpleIoc.Default.Register<&Provider2的GT;();
SimpleIoc.Default.Register&所述; BaseProvider>(()=>
SimpleIoc.Default.GetInstance&所述; Provider1>(),是);
SimpleIoc.Default.Register&所述; BaseProvider>(()=>
SimpleIoc.Default.GetInstance&所述; Provider2的>(),B);
VAR的结果= SimpleIoc.Default.GetAllInstances< BaseProvider>();
Assert.That(结果,Is.Not.Null);
Assert.That(result.Count(),Is.EqualTo(2));
Assert.That(result.Any(X => x.GetType()== typeof运算(Provider1)),Is.True);
Assert.That(result.Any(X => x.GetType()== typeof运算(Provider2之间)),Is.True);
}
With SimpleIoc
I'd like to register multiple implementations of IProvider
, something like:
SimpleIoc.Default.Register<IProvider, Provider1>();
SimpleIoc.Default.Register<IProvider, Provider2>();
So I can do:
var providers = SimpleIoc.GetAllInstances<IProvider>();
Is there a way to do something like this? If I try it as is I get that there is already a class registered for IProvider
.
You can do it by implementing a base class and using keyed registrations:
public interface IProvider { }
public abstract class BaseProvider : IProvider { }
public class Provider1 : BaseProvider { }
public class Provider2 : BaseProvider { }
[Test]
public void RegisterTwoImplementations_GetAllInstances_ReturnsBothInstances()
{
SimpleIoc.Default.Register<Provider1>();
SimpleIoc.Default.Register<Provider2>();
SimpleIoc.Default.Register<BaseProvider>(() =>
SimpleIoc.Default.GetInstance<Provider1>(), "a" );
SimpleIoc.Default.Register<BaseProvider>(() =>
SimpleIoc.Default.GetInstance<Provider2>(), "b");
var result = SimpleIoc.Default.GetAllInstances<BaseProvider>();
Assert.That(result, Is.Not.Null);
Assert.That(result.Count(), Is.EqualTo(2));
Assert.That(result.Any(x => x.GetType() == typeof(Provider1)), Is.True);
Assert.That(result.Any(x => x.GetType() == typeof(Provider2)), Is.True);
}
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