Databases
StackOverflow2013
Postsdbo
POHow can I tell the Data Annotations validator to also validate complex child properties?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow can I tell the Data Annotations validator to also validate complex child properties?
    primarykey
    data
    text
    <p>Can I automatically validate complex child objects when validating a parent object and include the results in the populated <code>ICollection&lt;ValidationResult&gt;</code>?</p> <p>If I run the following code:</p> <pre><code>using System; using System.Collections.Generic; using System.ComponentModel.DataAnnotations; namespace ConsoleApplication1 { public class Person { [Required] public string Name { get; set; } public Address Address { get; set; } } public class Address { [Required] public string Street { get; set; } [Required] public string City { get; set; } [Required] public string State { get; set; } } class Program { static void Main(string[] args) { Person person = new Person { Name = null, Address = new Address { Street = "123 Any St", City = "New York", State = null } }; var validationContext = new ValidationContext(person, null, null); var validationResults = new List&lt;ValidationResult&gt;(); var isValid = Validator.TryValidateObject(person, validationContext, validationResults); Console.WriteLine(isValid); validationResults.ForEach(r =&gt; Console.WriteLine(r.ErrorMessage)); Console.ReadKey(true); } } } </code></pre> <p>I get the following output:</p> <blockquote> <p><code>False</code><br> <code>The Name field is required.</code></p> </blockquote> <p>But I was expecting something similar to:</p> <blockquote> <p><code>False</code><br> <code>The Name field is required.</code><br> <code>The State field is required.</code></p> </blockquote> <hr> <p>I offered a bounty for a better child object validation solution but didn't get any takers, ideally</p> <ul> <li>validating child objects to an arbitrary depth</li> <li>handling multiple errors per object</li> <li>correctly identifying the validation errors on the child object fields.</li> </ul> <p>I'm still surprised the framework doesn't support this.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USRup
    1. USGWB
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow can I tell the Data Annotations validator to also validate complex child properties?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POHow can I tell the Data Annotations validator to also validate complex child properties?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POHow can I tell the Data Annotations validator to also validate complex child properties?
      1. USMartin Owen
      1. VTFavorite
    1. COSimilar question: http://stackoverflow.com/questions/3006516/support-for-nested-model-and-class-validation-with-asp-net-mvc-2-0
      singulars
      1. POHow can I tell the Data Annotations validator to also validate complex child properties?
      1. USRup
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload