IEnumerable in my ViewModel is not displayed with EditorForModel

Question

ViewModel

[Validator(typeof(ProdutoCategoriaValidator))]
public class ProdutoCategoriaViewModel
{
    [HiddenInput(DisplayValue = false)]
    public Guid ID {          


        

Answer 1

By default when you use Html.EditorForModel don't expect this to recurse down to complex properties such as your Tipos property which is of type IEnumerable. Brad Wilson explained this in his blog post (more specifically read the Shallow Dive vs. Deep Dive section towards the end of the post). You will need to write a custom editor template for the Object type if you want this to happen.

Another possibility is to specify the template name:

@Html.EditorFor(x => x.Tipos, "SelectListItem")

Also bear in mind that your editor template for the SelectListItem is wrong because you are binding the DropDownListFor to the model as first argument. Don't forget that the first argument of this helper must be a scalar property that will be used to hold the selected value. You need a string or integer property on your view model for this. The second argument represents the collection.

Another important aspect about editor templates is that when you have a property of type IEnumerable and an editor template called T.cshtml this editor template must be strongly typed to the T class and not IEnumerable as you did with your SelectListItem.cshtml template. This doesn't apply if you use UIHint or specify the template name as second argument to the EditorFor helper. n this case the template will be typed to the collection.

So to recap, you could either implement a custom object editor template as Brad Wilson suggested that will recurse down to complex properties or you could modify your _Formulario.cshtml view to specify EditorFor each individual elements.