Can I use Spring.NET to inject dependencies in a created instance?

Question

Is it possible to to something like this using Spring.NET IoC container?

MyClass instance = new MyClass();
ContextRegistry.GetContext().InjectDepenencies(instance);
// instance has the defined dependencies set

This would come in handy. Of couse I could use ContextRegistry.GetContext().Get("name") but that would create a new instance of the defined object. I would need to set the dependencies of an already created object.

Answer 1

There are three options available, the first one matches what you want.

• IApplicationContext.ConfigureObject(object target, string name)

  This configures the target object using the object definition which is matched by the name argument.

• IApplicationContext.Get(string name, object[] arguments)

  Which will either use the constructor or a static factory method which will receive the arguments as specified.

• GenericApplicationContext.RegisterObjectDefinition(string name, IObjectDefinition definition)

  You can use it to register dependencies at runtime.

Answer 2

如果将name定义为singleton（这是spring.net中的默认范围ContextRegistry.GetContext().Get("name")则ContextRegistry.GetContext().Get("name")将不会创建新实例。