Using Repository Pattern with Entity Framework. One of the tools for reaching for persistence ignorance is to build a facade between the data access layer and your business logic. Such facade will prevent the knowledge of how the data access is working and with which technology. That abstraction can be achieved by using the Repository Pattern. In the post I’ll show how you can use the Repository Pattern in order to make an abstraction layer on top of Entity Framework. The Repository Interface When we want to use the Repository Pattern we start with an interface which will be our data access facade. I’ll be using the following interface in my example: 1.public interface IRepository<T> 3. 4. 5. This interface only include some of the functionality which I’ll put in a repository. A Repository Implementation The following is a naive implementation for a department repository: 01.public class DepartmentRepository : IRepository<Department>, IDisposable 03. 05. private SchoolEntities _context; 07. 09. 11. public DepartmentRepository() 13. 16. 18.
ASP.NET MVC and LINQ to SQL Using Repository pattern. The Repository Pattern When building a Model for ASP.NET MVC applications always it is a good practice to use the Repository pattern so that the DAL layer is easy to change and test as per the need arises. When you use the Repository pattern, you create a separate repository class that contains all of your database access logic CURD with constraints. When we create the repository class, we create an interface that represents all of the methods used by the repository class. Within the controllers, we write our code against the interface instead of the repository. That way, we can implement the repository using different data access technologies in the future. In this post I am going to build my Model using LINQ to SQL . let’s get started . Now click Server Explorer link on LINQ to SQL Design Surface and Add Data connection and choose the DB you wanted to work with.
Choose your DB server name and DB ( click Test Connection to validate the DB connection) if (std.Count () ! Return stdRecord; } LINQ Best Practice 1 – The Repository Pattern. I’ve been using LINQ a lot with my new project, in particular with the Entity Framework. I have learned a lot about good practices with LINQ and I figured it would be a good idea to post them up here. Contained in these posts are all those things I’ve learned and suggest could be useful to you.
They are best practices that work for me, if they work for you then great, but everyone’s solution is different. Use the Repository Pattern I can’t stress this enough, if you’re going to use LINQ to Entities then you will benefit enormously from the repository pattern, in particular if Unit Testing and / or TDD is important to you. Here is an example repository for the Item table within my database. This is the interface: public interface IItemRepository Item Get(int itemCodeID); List<ValidationErrorResult> Save(Item item); void Delete(Item item); List<ValidationErrorResult> Add(Item item); List<Item> Search(string name, string description, int pageNumber, int itemsPerPage); And my implementation: Using Repository Pattern with Entity Framework - Gil Fink on .Net. Good repository pattern for asp.net mvc... Creating Model Classes with LINQ to SQL. The goal of this tutorial is to explain one method of creating model classes for an ASP.NET MVC application.
In this tutorial, you learn how to build model classes and perform database access by taking advantage of Microsoft LINQ to SQL. The goal of this tutorial is to explain one method of creating model classes for an ASP.NET MVC application. In this tutorial, you learn how to build model classes and perform database access by taking advantage of Microsoft LINQ to SQL In this tutorial, we build a basic Movie database application. We start by creating the Movie database application in the fastest and easiest way possible. We perform all of our data access directly from our controller actions. Next, you learn how to use the Repository pattern. What is a Model Class? An MVC model contains all of the application logic that is not contained in an MVC view or MVC controller. You can use a variety of different technologies to implement your data access logic. Create a Movie Database Summary.