ASP.NET MVC 3 - Validation Question

Question

Good evening everyone I have a question regarding validation of drop-down list values. I have a view that is bound to a view model type called ReservationData.

Answer 1

I too have come across this obviously massive oversight regarding client side validation with dropdownlists in MVC 3 and the best solution I can offer is to put the missing HMTL attributes in yourself.

In your view model create a property like this.

public Dictionary CustomerVechicleAttributes
    {
        get
        {
            Dictionary d = new Dictionary();
            d.Add("data-val", "true");
            d.Add("data-val-required", "Please select a Vechicle.");
            return d;
        }
    }

Then in your code, enter

@Html.DropDownListFor(m => m.CustomerVehicles[i].VehicleMakeId
            , new SelectList(Model.VehicleMakes, "Id", "Name")
            , @UIDisplay.Dropdown_DefaultOption, 
            **Model.CustomerVechicleAttributes** })

Just add the Model.CustomerVechicleAttributes as htmlAttributes to your dropdownlist. This will inject the necessary attributes that are missing. You will of course need to add any other attributes you may need like your class attribute.

Hope this helps.