CODEWITHSUNDEEP
c#asp.net-mvc
hellogoodnight
hellogoodnight

Reputation: 2139

Scaffolding view with "Create" template, getting error when running

This has been answered multiple times, but I have tried to follow the answers and still no success.

Error message:

There is no ViewData item of type 'IEnumerable<SelectListItem>' that has the key 'MovieID'

My model:

public class Show
    {
        public int ID { get; set; }
        public int MovieID { get; set; }
        public int TheaterID { get; set; }
        public DateTime StartTime { get; set; }
        public string BookingLink { get; set; }
        public string StartTimeAsString { get; set; }

        public Movie Movie { get; set; }
        public Theater Theater { get; set; }
    }

Where it crashes:

<div class="col-md-10">
    @Html.DropDownList("MovieID", null, htmlAttributes: new { @class = "form-control" })
    @Html.ValidationMessageFor(model => model.MovieID, "", new { @class = "text-danger" })
</div>

<div class="col-md-10">
    @Html.DropDownList("TheaterID", null, htmlAttributes: new { @class = "form-control" })
    @Html.ValidationMessageFor(model => model.TheaterID, "", new { @class = "text-danger" })
</div>

The view is autogenerated through the "Create" template. Any idea of how to fix this?

Upvotes: 0

Views: 39

Answers (1)

Luke
Luke

Reputation: 23690

You are not assigning an IEnumerable<SelectListItem> anywhere within your DropDownFor helpers as it expects.

Your Show class should contain a property for both select lists, so that the drop down knows what items to display:

public class Show
{
    public int ID { get; set; }
    public int MovieID { get; set; }
    public int TheaterID { get; set; }
    public DateTime StartTime { get; set; }
    public string BookingLink { get; set; }
    public string StartTimeAsString { get; set; }

    public Movie Movie { get; set; }
    public Theater Theater { get; set; }

    public IEnumerable<SelectListItem> Theatres { get; set; }
    public IEnumerable<SelectListItem> Moview { get; set; }
}

You should populate these properties in your Model before you pass them to your view and then pass them into your Html.DropDownListFor helpers:

<div class="col-md-10">
    @Html.DropDownListFor(x => x.MovieID, model.Movies, null, htmlAttributes: new { @class = "form-control" })
    @Html.ValidationMessageFor(model => model.MovieID, "", new { @class = "text-danger" })
</div>

<div class="col-md-10">
    @Html.DropDownListFor(x => x.TheaterID, model.Theatres, null, htmlAttributes: new { @class = "form-control" })
    @Html.ValidationMessageFor(model => model.TheaterID, "", new { @class = "text-danger" })
</div>

Upvotes: 1

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