Entity Framework Code First Approach

The Initial argument is the migration name and any name can be used. The preceding code creates a DbSet property for the entity set. In Entity Framework terminology, an entity set typically corresponds to a database table and an entity corresponds to a row in the table. After opening the console application, Entity framework is not installed by default. EF Core supports two development approaches 1) Code-First 2) Database-First.

The ASP.NET Core MVC framework is a lightweight, open source, highly testable presentation framework optimized for use with ASP.NET Core. MVC is framework mainly concentrates on how you deliver a webpage from server to client. In a nutshell, MVC builds web pages and EntityFramework abstracts database operations.

Entity Framework Vs MVC [closed]

In the next article, I will discuss How to Install the Entity Framework Core in ASP.NET Core Application using Visual Studio. Here, I briefly introduced Entity Framework Core in this article, and I hope you enjoy this Introduction to Entity Framework Core article. To take full what is entity framework advantage of this Entity Framework Core Tutorials, you should have the basic knowledge of C# and any database such as SQL Server, Oracle, or MySQL to gain more knowledge of these tutorials. Having .NET Core, Visual Studio, and SQL Server installed on your computer is good.

That means Developers who follow the Domain-Driven Design (DDD) principles, prefer to begin coding with their domain classes first and then generate the database required to persist their data. So, in this case, the database is only for persisting the data. In the Code-First Approach, the EF Core creates the database and tables using Code-First Migration based on the default conventions and configuration. You can also change the default conventions used to create the database and its related tables.

In this post, I will make a brief introduction to ASP.NET Core MVC and then explain the project structure of an ASP.NET…

The users of this School application should have the ability to add and update students, standards, teachers, and course information. The Entity Framework is an Object/Relational Mapping (O/RM) framework that maps objects to relational databases. EF Core is designed to work with .NET Core applications but can also be used with standard .NET Framework applications based on Framework 4.5 or higher. The following diagram shows the supported types of applications that we can develop using EF Core.

This is a very common task as a developer for us that we do almost in every application. In this article, we saw a brief introduction of Entity framework and how to install it. And also we saw how to retrieve the data from sql server using the database-first approach. In the next article we will see about the code first approach in Entity framework using MVC. So, create a class file with the name EFCodeFirstContext.cs and then copy and paste the following code into it. But the class should and must be derived from DbContext class and exposes DbSet properties for the types that you want to be part of the model.

Create migration

Although they’re different things entirely they are compatible. Connect and share knowledge within a single location that is structured and easy to search.

Then provide the project name as EFCodeFirstDemo and choose the location where you want to create the project, and finally click on the OK button which will create the Console Application for us. The First step is to create a Console Application with the name EFCodeFirstDemo. To do so, open Visual Studio and then select File → New → Project from the context menu as shown in the below image. Entity Framework is an Object/Relational Mapping (O/RM) framework. It is an enhancement to ADO.NET that gives developers an automated mechanism for accessing & storing the data in the database. If you’re working on an existing project that already using EF6 or one that is linked to the .NET Framework, it’s still a good option to use EF 6.

Entity Framework Core

If you have an existing database and database tables are already there, you must use the EF Core Database First Approach. In the database-first approach, the EF Core creates the DBContext and Domain Classes based on the existing database schema using EF Core Command. It is a data access framework which used to create and test data in the visual studio. The latest package is shipped as Entity Framework NuGet Package. So, create a class file with the name Student.cs and then copy and paste the following code.

Entity framework is object-relational mapping (ORM) framework. It is an
enhancement to ADO.NET that gives developers an automated mechanism
for accessing & storing the data in the database. As you see, the TvShows table and the migration history table are created automatically.

You can also check the version of EntityFramework.dll which is included in your project by going to the Reference folder. In the Reference folder, right-click on the EntityFramework and the click on the properties option. Also, select the latest version (in this case 6.4.4) or any version as per your requirement, and finally click on the Install button as shown in the below image. However, it can also be used with standard .NET 4.5+ framework based applications. The EF Core supports relational and non-relational databases, which is possible due to the database providers.

• The ORM Framework sits between our application code and the Database.
• Here, in this article, we just see how to use Entity Framework in ASP.NET MVC Application.
• Entity Framework Core is the new and improved version of the Entity Framework for .NET Core applications.
• The  EmployeeDataModel.Context.cs which is inside EmployeedataModel.Context.tt as sown below.

The following figure describes where the Entity Framework present in your application. A new StudentsController has added that contains some auto generated code as given below. If you want, you can follow this publication and be informed when a new post arrives. You should change the Create, Details and Delete views to show the new field as well. Next, we need to change the Index, Create, Edit, Delete views to show this new field. Select ASP.NET Core Web Application, give your project a name and select OK.

Now run the application and you should get the result as expected as shown in the below image. Here I am going to use Entity Framework 6.x, so I am selecting the Entity Framework 6.x radio button and click on the Next button as shown in the below image. In the next step, click on the new connection From Choose your data connection wizard as shown below. Let us understand how to use Entity Framework in ASP.NET MVC Application step by step.