Here, select the “EF Designer from database” option as we are going to use the Entity Framework Database First Approach. 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 what is entity framework or load objects from the database. It comes at the cost of another abstraction layer, but it will make the code easier to write. It will create the DBContext class for us whose name is the same as the name of the connection string that is EmployeeDBContext.
Prior to .NET 3.5, we (developers) often used to write ADO.NET code or Enterprise Data Access Block to save or retrieve application data from the underlying database. We used to open a connection to the database, create a DataSet to fetch or submit the data to the database, convert data from the DataSet to .NET objects or vice-versa to apply business rules. Microsoft has provided a framework called “Entity Framework” to automate all these database related activities for your application. Entity framework, you can think of it as a way to access the database (in an object-oriented fashion). As I’ve stated before, you can easily use entity framework as the M part of mvc if you need to interact with a database. To coordinate with Entity Framework we need to create a database context class for a given data model.
With the help of an example, it is more clear how to use it and where it is exactly used. From this article, we come to know that the entity framework depends on ORM. Provide the necessary details to communicate with the database such as Server name, select the Authentication Type, select the Database and click on the Ok button as shown below. In the next step, click on the new connection From Choose your data connection wizard as shown below. There are other ORMs in the marketplace such as NHibernate and LLBLGen Pro. Most ORMs typically map domain types directly to the database schema.
Let’s have a more clear understanding of the entity framework in MVC with the help of an example. Right-click on the Index Action Method and click on Add View. Learn Entity Framework using simple yet practical examples on EntityFrameworkTutorial.net for free. Learn Entity Framework DB-First, Code-First and EF Core step by step. While using this site, you agree to have read and accepted our terms
thoughts on “Entity Framework in ASP.NET MVC”
We want to display the data from both tables (Departments and Employees) in a console application as shown below. Once you click on the OK button a new dialog will pop up for selecting project Templates as shown in the below image. From the below window, we are going to choose the Empty Project Template and Select MVC from Add Folders and core reference section. 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.