Ioc：The basic pattern for integrating Autofac into your application

The basic pattern for integrating Autofac into your application is:

• Structure your app with inversion of control (IoC) in mind.
• Add Autofac references.
• At application startup...
• Create a ContainerBuilder.
• Register components.
• Build the container and store it for later use.
• During application execution...
• Create a lifetime scope from the container.
• Use the lifetime scope to resolve instances of the components.