Jon Galloway | Development Platform Evangelist Christopher Harrison | Microsoft Certified Trainer

1. 02 | Developing ASP.NET MVC 4 Models Jon Galloway | Development Platform Evangelist Christopher Harrison | Microsoft Certified Trainer

2. Module Overview • Working with MVC Models • Working with Data

3. Lesson 1: Creating MVC Models • Developing Models Using Display and Edit Data Annotations on Properties Validating User Input with Data Annotations What Are Model Binders? Model Extensibility Demonstration: How to Add a Model

4. Developing Models public class Photo { publicintPhotoID { get; set; } publicstring Title { get; set; } publicbyte[] PhotoFile { get; set; } publicstring Description { get; set; } publicDateTimeCreatedDate { get; set; } publicstring Owner { get; set; } publicvirtualList<Comment> Comments { get; set; } }

5. Display and Edit Data Annotations public class Photo { // other properties excluded [DisplayName("Picture")] publicbyte[] PhotoFile { get; set; } [DataType(DataType.MultilineText)] publicstring Description { get; set; } [DataType(DataType.DateTime)] [DisplayName("Created Date")] [DisplayFormat(DataFormatString = "{0:dd/MM/yy}"] publicDateTimeCreatedDate { get; set; } }

6. Validating User Input with Data Annotations public class Person { public intPersonID { get; set; } [Required(ErrorMessage="Please enter a name.")] public string Name { get; set; } [Range(0, 400)] public intHeight { get; set; } [Required] [DataType(DataType.EmailAddress)] public string EmailAddress { get; set; } }

7. What Are Model Binders? • The Default Controller Action Invoker uses model binders to determine how parameters are passed to actions • The Default Model Binder passes parameters by using the following logic: • The binder examines the definition of the action that it must pass parameters to • The binder searches for values in the request that can be passed as parameters

8. How to Add a Model

9. Lesson 2: Working with Data • The Entity Framework Using an Entity Framework Context Data Access in Models and Repositories

10. The Entity Framework Types of Entity Framework Workflows • Database First • Model First • Code First

11. How to Use Entity Framework Code

12. Data Access in Models and Repositories Model Model Repository Database Database