Skip to main content

EF Core–.NET 8 update

The .NET 8 release of Entity Framework Core offers a large list of new features. The goal of this post is not to walk you through all these features, therefore you can have a look at the What's new page on Microsoft Learn, instead I want to talk about a specific feature as a follow-up on the previous posts about EF Core I did this week.

In those posts I talked about the FromSql method to use your handwritten SQL statements to fetch EF Core entities. What I didn’t mention is that this only worked for entities that were registered as an entity to the DbContext.

Starting with the EF Core 8 release, this condition has been removed, allowing us to create any SQL statements you want and map them to C# objects.

This means that EF Core can now become an alternative to micro-ORM’s like Dapper. Of course there is maybe still a performance difference(I’ll do a benchmark and share the results) but feature wise this is a great addition.

To use this feature, we need to call the SqlQuery<T> method:

The cool thing is that you can combine this with Linq statements. EF Core will generate a SQL query that combines your handwritten statement with generated SQL:

More information

What's New in EF Core 8 | Microsoft Learn

SQL Queries - EF Core | Microsoft Learn

Labels:

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...
Read more

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.
Read more

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...
Read more