This document provides an overview of Entity Framework 4 and how to use it in different scenarios. It discusses Code First, Model First, and Database First approaches. For Code First, it demonstrates how to create data classes and contexts and add a connection string. For Model First, it shows how to create an entity data model, generate a database from the model, and use the model in an MVC project. It also discusses how to generate models from an existing database. Finally, it demonstrates integrating Entity Framework with an MVC 3 and Razor project, including adding controllers and views to display and edit data.

1. Entity Framework 4& How touseitPascal FransenApril 2011Nspyre Technology Group .NETwww.nspyre.net

2. OverviewEntity Framework

3. Introduction

4. Features

5. Code first

6. Demo : Forms

7. Model first

8. Demo : Console

9. Generate From database

10. Tiny Introduction MVC3

11. Tiny Introduction Razor

12. Demo : EF4/MVC3/razor

13. Questions2

14. EntityFramework - introduction3

15. EntityFramework – introduction – new features4POCO Support: You can now define entities without requiring base classes or data persistence attributes.

16. Lazy Loading Support: You can now load sub-objects of a model on demand instead of loading them up front.

17. N-Tier Support and Self-Tracking Entities: Handle scenarios where entities flow across tiers or stateless web calls.

18. Better SQL Generation and SPROC support: EF4 executes better SQL, and includes better integration with SPROCs

19. Automatic Pluralization Support: EF4 includes automatic pluralization support of tables (e.g. Categories->Category).

20. Improved Testability: EF4’s object context can now be more easily faked using interfaces.

21. Improved LINQ Operator Support: EF4 now offers full support for LINQ operators. Entity Framework – Code FirstAddreferences via Tools -> Library Package Manager -> Package Manager ConsoleIn console type install-package entityframeworkReferenceswillbeaddedautomatically5

22. EntityFramework – Code First -Create data classes sets and contextCreate ClassesAddreferencestoother classes (virtual)CreateDbContextwithDbSet ‘s6usingSystem.Data.Entity;namespaceEntityCodeFirst{public class Restaurant : DbContext {public DbSet<Table> Tables { get; set; }public DbSet<Client> Clients { get; set; } }}public class Client{public string Name { get; set; }public string Phone { get; set; }public DateTime Time { get; set; } public virtual Table Table { get; set; }}public class Table{public string Name { get; set; }public intMaxClients { get; set; }public virtual ICollection<Client> Clients{ get; set; } }

23. Entity Framework – Code First - Addconnection stringAddto web / app.config :<?xmlversion="1.0" encoding="utf-8" ?><configuration> <connectionStrings> <add name="Restaurant"connectionString="Server=.\SQLEXPRESS;Database=Restaurant;Trusted_Connection=True;"providerName="System.Data.SqlClient" /> </connectionStrings></configuration>7

24. Entity Framework – Code First - DemoDemo8