CODEWITHSUNDEEP
asp.net-mvc
TheBoubou
TheBoubou

Reputation: 19903

ASP.NET MVC : validation model evict the id field

I have a model, like this : 

public class ContactDto
{
    public int Id { get; set; }

    [Display(Name = "FirstName")]
    public string FirstName { get; set; }

    [Required]
    [Display(Name = "LastName")]
    [StringLength(50)]
    public string LastName { get; set; }
}

when I do this : 

if (!ModelState.IsValid)
{

}

The model is not valid because, I have 0 in the Id. When I do the sume but an update, means with an idea, no problem. Why the Id is check ? How avoid this ?

Thanks,

Upvotes: 1

Views: 553

Answers (1)

Robin van der Knaap
Robin van der Knaap

Reputation: 4120

An integer in the viewmodel is automatically required because it is not nullable. The default value of an integer is 0, the model will be invalid when id is set to 0.

Try defining the id like this in your viewmodel:

public int? Id { get; set; }

Upvotes: 3

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