Entity Framework Tutorials using C#

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. Here, you can observe we have created the connection object, created the data adapter object, and created Dataset, Data Tables, and DataView objects.

Having .NET Framework, Visual Studio, and SQL Server installed on your computer is good. In this Entity Framework Tutorials Course using C#, I will discuss all the concepts of Entity Framework with Real-Time Examples. In this Entity Framework Tutorials article series, we will start from the very basics and, as we progress, cover all the intermediate and advanced features of Entity Framework as well. Will test all the API using Postman tool and will be elaborated in Part C.

EF Core Development Approaches

An ORM framework does this object to SQL mapping by generating SQL statements and the Entity manager will execute them when you need to save or load objects from the database. It comes at the cost of another abstraction layer, but it will make the code easier to write. Most of the time you don’t have to write any SQL yourself, and iterating is very easy using your language built in functions. When you make any changes to the object, the ORM will usually detect this, and mark the object as ‘modified’.

In this article, you will learn how to build a simple Web API with Read, Create, Update and Delete action with HTTP verbs of GET, POST, PUT and DELETE respectively and will test the Web APIs with the Postman tool. Here, in this article, we just see how to use Entity Framework in ASP.NET MVC Application. In our upcoming articles, we will discuss how to perform CRUD operations in ASP.NET MVC using Entity Framework with a real-time example. In the next article, I am going to discuss how to create Hyperlink in ASP.NET MVC application. Then we need to select the database object for our application. As our database has one table, so we need to select that Employee Table.

Entity Framework Development Approaches

That means the Entity Framework eliminates the need to write the data-access code that developers usually need to write. In this article, I am going to give you a brief introduction to the Entity Framework. Before .NET 3.5 as a developer, we often used to write ADO.NET code to perform CRUD operations with the underlying database. For this, we need to create a Connection Object with the database, then Open the Connection, Create the Command Object and execute the Command using Data Reader or Data Adapter.

The Database Provider sits between the EF Core and the Database it supports. Entity Framework (EF) Core is an ORM (Object-Relational Mapper) Framework for data access in .NET Core. It was released along with .NET Core and is an Extensible, Lightweight, Open Source, and Cross-Platform Version of Entity Framework data access technology.

Differences between ASP.NET MVC framework and Entity Framework

It enables developers to work with data using objects of domain specific classes without focusing on the underlying database tables and columns where this data is stored. With the Entity Framework, developers can work at a higher level of abstraction when they deal with data, and can create and maintain data-oriented applications with less code compared with traditional applications. The above figure represents how an entity framework interacts with the domain class and database. It provides a connection between the business entity and data tables in the database.

It saves data stored in the properties of business entities and also retrieves data from the database and converts it to business entities objects automatically. Entity Framework will execute the relevant query in the database and then materialize results into instances of your domain objects for you to work within your app. That means the Entity Framework eliminates the need for writing the data-access code that developers usually need to write.

The Entity Data Model

The version 4.3.1 was released on February 29, 2012.[10] There were a few updates, like support for migration. The EF Core database provider usually contains the functionality specific to the database it supports. Entity Framework Core is an ORM Tool that increases the developer’s productivity by reducing the redundant task of doing entity framework meaning CRUD operations against a database in a .NET Core Application. This is the first article of the Entity Framework Core article series, and in this article, I will give you an overview of Entity Framework Core. The Entity Framework Core, or EF Core, is the latest version of Entity Framework and completely rewrites from the ground up.

From the below window, we are going to choose the Empty Project Template and Select MVC from Add Folders and core reference section. From the New Project window as shown in the below image, expand the Visual C# node and select Web from the left pane. Provide a meaningful name to your project such as CRUD_OperationsInMVC.

These source-specific providers abstract the ADO.NET interfaces used to connect to the database while programming against the conceptual schema. It uses a command tree to translate standard SQL languages like LINQ into native SQL expressions, which it then executes on the given DBMS system. This model is best suitable for new projects where the database does not exist. This model is stored using the EDMX file and can be viewed and edited by the developer.

Entity Framework is an open-source object-relational mapper framework for .NET applications supported by Microsoft. It increases the developer’s productivity as it enables developers to work with data using objects of domain-specific classes without focusing on the underlying database tables and columns where this data is stored. It eliminates the need for most of the data-access code which is used to interact with the database that developers usually need to write.

Actually, this is a Time-Consuming and Error-Prone Process. It is the most crucial class when it comes to working with EF 6 or EF Core. It helps execute the create, read, update, and delete commands in a database schema. It is also used to configure domain classes, map databases, track changes, and store cache.

• Here, in this article, I am not going to explain the code.
• Now, we will run the application on the Kestrel server.
• It provides a connection between the business entity and data tables in the database.
• It will add the reference to the Entity Framework in the reference folder.