Question

If a partial view is based upon a base class, is it possible to check if it is a descendant class and if so, use the descndant class’ properties within the Html helpers (LabelFor, EditorFor etc.)?

@model ProjectX.Models.VehicleModel

<div>
     @Html.LabelFor(model => model.Fuel)
     @Html.TextBoxFor(model => model.Fuel)
</div>

@{
    if (Model is CarModel)
    {
        CarModel car = (CarModel)Model;

        @Html.LabelFor(car => car.Doors)
        @Html.TextBoxFor(car => car.Doors)
    }
}

Answer 1

Yes its possible; try this …

Model classes

namespace MvcApplication2.Models
{
    public class Vehicle
    {
        public string Fuel { get; set; }
    }

    public class Car : Vehicle
    {
        public int Doors { get; set; }
    }
}

View

@model MvcApplication2.Models.Vehicle

@{
    ViewBag.Title = "Index";
}

<h2>Index</h2>


<div>
     @Html.LabelFor(model => model.Fuel)
     @Html.TextBoxFor(model => model.Fuel)
</div>

@{
    if (Model is MvcApplication2.Models.Car)
    {
        @Html.LabelFor(model => ((MvcApplication2.Models.Car)model).Doors)
        @Html.TextBoxFor(model => ((MvcApplication2.Models.Car)model).Doors)
    }
}

Hope this helps.