where is the LazyServiceProvider Inject from?

[hyzx86]

Hello，

I was looking at the ABP source code, and I had a problem , I can't find any code to assign the LazyServiceProvider property.
where is the LazyServiceProvider Inject from?

abp/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/ApplicationService.cs

Line 36 in 2816b72

public IAbpLazyServiceProvider LazyServiceProvider { get; set; }

[maliming]

https://docs.abp.io/en/abp/latest/Dependency-Injection#property-injection

[hyzx86]

So does property injection have to integration with Autofac?
But I remember that Autofac in Abp seemed optional

[Stirda]

Autofac is optional for your injection usages if you rely only on constructor injection. But ABP needs Autofac because property injection is in many places in the framework.

[hyzx86]

Got it ，Thanks @Stirda !
It seems that Autofac is mandatory in Abp, I mistakenly thought it was an optional component.