Skip to main content

EF Core - Lazy loading without a proxy

Yesterday I talked about lazy loading and how you can avoid the usage of proxy objects in NHibernate. Writing that post made me wonder if a similar thing is possible in Entity Framework Core. Let's find out!

Remark: If you want to learn more about the concept of lazy loading check out my previous post first.

Lazy loading in Entity Framework

Lazy loading in Entity Framework works quite similar to NHibernate and also uses a proxy object by default. Therefore you need to install the Microsoft.EntityFrameworkCore.Proxies package and enabling it with a call to UseLazyLoadingProxies.

Contrary to NHibernate you don’t need to make all your properties virtual but only those where lazy loading should be enabled:

Lazy loading without a proxy

Lazy loading without a proxy object in Entity Framework IS possible although it requires a bit more work than when using NHibernate.

For Entity Framework you need to explicitly inject the ILazyLoader service and than use this service to fetch the related data:

More information: Lazy Loading of Related Data - EF Core | Microsoft Learn

Popular posts from this blog

.NET 8–Keyed/Named Services

A feature that a lot of IoC container libraries support but that was missing in the default DI container provided by Microsoft is the support for Keyed or Named Services. This feature allows you to register the same type multiple times using different names, allowing you to resolve a specific instance based on the circumstances. Although there is some controversy if supporting this feature is a good idea or not, it certainly can be handy. To support this feature a new interface IKeyedServiceProvider got introduced in .NET 8 providing 2 new methods on our ServiceProvider instance: object? GetKeyedService(Type serviceType, object? serviceKey); object GetRequiredKeyedService(Type serviceType, object? serviceKey); To use it, we need to register our service using one of the new extension methods: Resolving the service can be done either through the FromKeyedServices attribute: or by injecting the IKeyedServiceProvider interface and calling the GetRequiredKeyedServic...

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t...