使用AutoFac手动调用属性注入 [英] manually invoke property injection with AutoFac

问题描述

假设所有依赖项都已在程序开始时注册.在程序的后面，如何使用AutoFac使用无参数构造函数创建新对象并将已注册的属性注入到该对象中?

Suppose all the dependencies have already been registered at the beginning of the program. At later points in the program how can you use AutoFac to create a new object with a parameterless constructor and inject the registered properties into the object?

推荐答案

您可以使用PropertiesAutowired在容器中注册对象，然后在需要安装实例时使用resolve:

You can register your object in the container with PropertiesAutowired then use resolve when you need an instace:

ContainerBuilder builder = new ContainerBuilder();
// builder register other dependencies
builder.RegisterType<MyObject>().PropertiesAutowired();

var container = builder.Build();

var myObject = container.Resolve<MyObject>(); //the properties will be filled

或者如果您不想在容器中注册，则可以在现有实例上使用InjectProperties方法:

Or if you don't want to register in the container your can use the InjectProperties method on an existing instance:

ContainerBuilder builder = new ContainerBuilder();
// builder register other dependencies

var container = builder.Build();

var myObject = new MyObject();
container.InjectProperties(myObject); //the properties will be filled

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