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| Dateititel | Entity Framework Core in Action |
| Veröffentlichungsdatum | |
| Sprache | Deutsch |
| ISBN-10 | 6535954904-TGV |
| Digital ISBN | 233-5931009078-NGY |
| Schöpfer | Thalia Franz |
| Übersetzer | Udonna Faakhir |
| Seitenzahl | 158 Pages |
| Editor | Rick Ochsner |
| Datentyp | EPub PDF AMZ HWP WRD |
| Dateigröße | 1.45 MB |
| Dateinamen | Entity Framework Core in Action.pdf |
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Queries in Entity Framework Core with Explicit Loading. When working with Explicit Loading in Entity Framework Core, we have an additional command available. It allows the query to be applied to the relationship. So, instead of using the Load method, as we did in the previous example, we are going to use the Query method:
Entity Framework Core (EF) converts expressions into SQL at runtime. In earlier versions, it was straight forward to get the SQL. In Entity Framework Core 3, you must access the SQL using article explains how to access the SQL generated and gives some example code to access the output of queries made behind the scenes.
When Should I use Entity Framework Core? You can go ahead with Entity Framework Core. if your application consists mostly of CRUD Operations only ( Create, Read, Write). Trust me, this is the case 9 out of 10 times. if rapid development is necessary. With complex requirements, EFCore may have slower performance. But it is totally optimizable as ...
But in EF Core version 2.1, adding the .ToList() turns the load of all the TagNames into one final database query. This is OK, but can still have problems – see my article “Entity Framework Core performance tuning – a worked example” to see an even better way to handle comma separated strings. 2b. List of posts using AutoMapper and ...
This article focuses on controlling access to data in an Core application using Entity Framework Core (EF Core) to access the database. I have extended the example Core application , I built for the first article and added a new Core MVC web app called DataAuthWebApp which covers data authorization instead of the feature authentication I have already described in Part 1.
Entity Framework Core does not support multiple parallel operations being run on the same DbContext instance. This includes both parallel execution of async queries and any explicit concurrent use from multiple threads. Therefore, always await async calls immediately, or use separate DbContext instances for operations that execute in parallel.
Even though we have changed only the Name property, ... We must be careful with Delete actions if our entity has relationships and we haven’t specified them in the delete action. Deleting the main entity could delete the relationships as well (cascade delete), depending on the entity configuration. We have talked about configuring delete actions in the Entity Framework Core Relationships ...
This answer is for EF Core 2.1. For EF Core 3.0 and 3.1 see the @Thom Kiesewetter's answer. For EF Core 5 there will be built-in method ToQueryString() used on IQueryable. Since EF 7 is renamed to Entity Framework Core I will summarize you the options for EF Core.
Library is Lightweight and very Efficient, having all mostly used CRUD operation. Was selected in top 20 EF Core Extensions recommended by Microsoft. Current version is using EF Core 3.1 and at the moment supports Microsoft SQL Server(2008+) and SQLite. It is targeting NetStandard 2.0 so it can be ...
Jon P Smith is a .NET Core backend developer, architect, and the author of Entity Framework Core in Action. As with all EF Core releases, the team implements big features, but also many smaller usability improvements. The new () method is one of these improvements. It clears the EF change tracker so that all currently tracked entities are detached. For example ...