MVC data annotation to compare one property to another?

Question

I've been playing around data annotations in MVC2 and am curious if there is an annotation to compare 2 properties (ie. password, confirm password)?

See http://stackoverflow.com/questions/2450198/how-to-validate-two-properties-with-asp-net-mvc-2 — Çağdaş Tekin, Mar 15 '10 at 22:49

score 42 · Answer 1 · edited Sep 15 '11 at 17:43

42

If you are using ASP.Net MVC 3, you can use System.Web.Mvc.CompareAttribute

[Required]
[DataType(DataType.Password)]
public string Password { get; set; }

[Required]
[DataType(DataType.Password)]
[Compare("Password")]
public string PasswordConfirm { get; set; }

edited Sep 15 '11 at 17:43

Greg B

14,597
18
87
141

answered Sep 15 '11 at 07:27

Cillié Malan

864
11
13

5

why is this in system.web.mvc instead of dataAnnotations? Shouldn't have to reference system.web.mvc in my model project. How annoying. – Patrick Lee Scott Sep 29 '11 at 19:49
11

In .Net 4.5 it's in the System.Component.DataAnnotations as well. – AlignedDev Aug 23 '12 at 18:29

score 6 · Accepted Answer · edited Jul 16 '12 at 12:13

6

Here you go: http://www.dotnetguy.co.uk/post/2010/01/09/Property-Matching-With-Data-Annotations.aspx
Edit: New link: http://www.dotnetguy.co.uk/post/2010/01/09/property-matching-with-data-annotations/

edited Jul 16 '12 at 12:13

Community

1
1

answered Mar 15 '10 at 22:37

Dustin Laine

37,935
10
86
125

score 2 · Answer 3 · answered Jun 10 '15 at 12:33

System.Web.Mvc.CompareAttribute has been deprecated.

I was able to modify to work like this:

    [Required]
    [DataType(DataType.Password)]
    [Display(Name = "Confirm password")]
    [System.ComponentModel.DataAnnotations.Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
    public string ConfirmPassword { get; set; }

score 0 · Answer 4 · answered Mar 15 '10 at 22:38

0

There's not one built in, however, you can make your own. See this link, which shows the "PropertiesMustMatchAttribute" that does just what you're looking for.

answered Mar 15 '10 at 22:38

David Morton

16,338
3
63
73

MVC data annotation to compare one property to another?

4 Answers4