CODEWITHSUNDEEP
asp.net-mvc-3entity-frameworknull
Baral
Baral

Reputation: 3141

MVC3 Editing Model

I have the following Model. 

 public class Person
{
    public Guid ID { get; set; }

    [Required]
    [DataType(DataType.Text)]
    [Display(Name = "Prénom")]
    public string FirstName { get; set; }

    [Required]
    [DataType(DataType.Text)]
    [Display(Name = "Nom")]
    public string LastName { get; set; }

    [Required]
    [DataType("Users")]
    [Display(Name = "Adresse")]
    public Address Address { get; set; }

As you can see, it contains a public Field of Address Type:

    public class Address
{
    public Guid ID { get; set; }

    [Required]
    [DataType(DataType.Text)]
    [Display(Name = "Rue")]
    public string Street { get; set; }

    [Required]
    [DataType(DataType.Text)]
    [Display(Name = "Ville")]
    public string City { get; set; }

    [Required]
    [DataType(DataType.Text)]
    [Display(Name = "Province")]
    public string Province { get; set; }

I have no problem creating a new instance. Both the person and the address are posted into the database

 [HttpPost]
    public ActionResult Create(Person model)
    {
        if (ModelState.IsValid)
        {
            db.Persons.Add(model);
            db.SaveChanges();

I would like to understand why when I retrieve the Person from the db using the following commands, the Address is always NULL.

 return db.Persons.FirstOrDefault();

Thanks

Upvotes: 0

Views: 124

Answers (1)

Eranga
Eranga

Reputation: 32447

You need to eager load the address property.

return db.Persons.Include("Address").FirstOrDefault();

If you need lazy loading behavior you need to mark Address property as virtual

[Required]
[DataType("Users")]
[Display(Name = "Adresse")]
public virtual Address Address { get; set; }

Upvotes: 4

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