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docs/en/Community-Articles/2022-11-28-EF-Core-Entity-Dependency-Injection/POST.md

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 [Dependency injection](https://docs.abp.io/en/abp/latest/Dependency-Injection) is a widely-used pattern of obtaining references to other services from our classes. It is a built-in feature when you develop ASP.NET Core applications. In this article, I will explain why we may need to have references to other services in an entity class and how we can implement Entity Framework Core's new `IMaterializationInterceptor` interface to provide these services to the entities using the standard dependency injection system.
 
+> You can find the source code of the example application [here](https://github.com/abpframework/abp-samples/tree/master/EfCoreEntityDependencyInjectionDemo).
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 ## The Problem
 
 While developing applications based on [Domain-Driven Design](https://docs.abp.io/en/abp/latest/Domain-Driven-Design) (DDD) patterns, we typically write our business code inside [application services](https://docs.abp.io/en/abp/latest/Application-Services), [domain services](https://docs.abp.io/en/abp/latest/Domain-Services) and [entities](https://docs.abp.io/en/abp/latest/Entities). Since the application and domain service instances are created by the dependency injection system, they can inject services into their constructors.
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 Injecting services into entities seems a certain way of forcing some business rules in your entities. However, because of the current technical limitations, design issues and usage difficulties, I don't suggest to depend on services in your entities. Instead, create domain services when you need to implement a business rule that depends on external services and entities.
 
+## The Source Code
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+* You can find the full source code of the example application [here](https://github.com/abpframework/abp-samples/tree/master/EfCoreEntityDependencyInjectionDemo).
+* You can see [this pull request](https://github.com/abpframework/abp-samples/pull/207/files) for the changes I've done after creating the application.
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 ## See Also
 
 * [What's new in EF Core 7.0](https://learn.microsoft.com/en-us/ef/core/what-is-new/ef-core-7.0/whatsnew)