ASP.Net MVC - model with collection not populating on postback

Question

I have an ASP.Net MVC application with a model which is several layers deep containing a collection.

I believe that the view to create the objects is all set up co

Answer 1

I think that your model is too complex for the default model binder to work with. You could try using multiple parameters and binding them with prefixes:

public ActionResult Create( 
    Person person,
    [Bind(Prefix="Person.PersonDetails")]
    PersonDetails details,
    [Bind(Prefix="Person.PersonDetails.ContactInformation")] 
    ContactInformation[] info )
{
      person.PersonDetails = details;
      person.PersonDetails.ContactInformation = info;

      ...
}

Or you could develop your own custom model binder that would understand how to derive your complex model from the form inputs.