entity framework code first sql server connection string

Since these are the two properties which are of model type in our project. As seen in the above code there are two DbSet for Employee and EmplyeeReview. We have to use the name space using in this class. Public EmployeeDb():base('name=DefaultConnection') The code for the class is as shown below.

Step 4: Next we will create the class which will help us in creating the tables and relationships in the data source. EF will also create foreign key reference between these two tables using EmployeeID foreign key ID. The EF will implicitly create primary fields in these two tables using these fields. public class EmployeeĪs we can see from the above code both classed have Id field. Step 3 :The code for the Employee.cs and EmployeeReview.cs is as shown below.

Step 2: Entity framework is installed.Create the project structure as shown below figure. Type Install-Package EntityFramework and Enter. Install Entity framework by Going to Tools > NuGet Package Manager > Package Manager Console. Please follow these steps to start working with code First technique. Code First – We have class definitions and entity framework uses these classes to create database.Entity framework generates both the class definition and database schema. Model First – In graphical designer we have the conceptual model for my application.It generates all the classes you need to query and update the database. Schema First – Point to the existing database and it can import the database schema.There are different ways to get started with entity framework. While we are working with the entity framework we don’t have to worry about the SQL connections, SQL commands, SQL parameters, SQL data readers and none of the low level abstractions we have programmed with in the past with. I have used Visual Studio Community 2015 for this article.Įntity framework allows us to access a relational database using strongly typed C# code or any. My application can be used as an code example to start working with entity framework in C#. The Client can be any application like asp.net, asp.net MVC. I have used WPF application for demo purpose only. I will develop a WPF client application which will use code first technique. In this article I will show how we can work with Entity Framework.

Entity framework code first sql server connection string