passing data from controller to view ASP.NET

Question

I am having a issue passing a variable from a controller to a view. I have created an actionresult that allows users to add meals to a restaurant menu. I need the menuID in a html action link to access the menu details page. But when I run the page ViewData["MenuID"] returns as null even though menuID has a value in the controller action result. Is there another way to send data from a controller to a view?

Create action result

[HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create(MealviewModel model, int? menuID)
        {
            if (menuID == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            else
            {
                ViewData["MenuID"] = menuID;
                if (ModelState.IsValid)
                {
                    var manager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext()));
                    var currentUser = manager.FindById(User.Identity.GetUserId());


                    var currentrestaurant = (from r in db.Restaurants
                                             where r.UserID == currentUser.Id
                                             select r).First<Restaurant>().id;

                    var currentmenu = (from m in db.Menus
                                       where m.Restaurantid == currentrestaurant
                                       select m).First<Menu>().Id;
                    var meal = new Meal() { Name = model.Name, Description = model.Description, Price = model.Price, MenuID = menuID, Catergory = model.Catergory };

                    db.Meals.Add(meal);
                    db.SaveChanges();
                    return RedirectToAction("Create", new { MenudID = menuID });

                }
            }
            return View();

        }

Create CSHTML Page

@model BiteWebsite.Models.MealviewModel
@using BiteWebsite.Models;

@{
    ViewBag.Title = "Add Items to Your Menu";
}

<h2>Add Items to Your Menu</h2>

@using (Html.BeginForm())
{

    var ID = ViewData["MenuID"];
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <hr />
        @Html.ValidationSummary(true)
        <div class="form-group">
            @Html.LabelFor(model => model.Catergory, new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.DropDownList("Catergory", new SelectList(new[] {"Chef Specials","Deserts","Drinks","Main Courses","Sides",
                                                                "Starters" ,"Salads"}))
            </div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.Name, new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name)
                @Html.ValidationMessageFor(model => model.Name)
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Description, new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Description, new { @cols = "80", @rows = "4" })
                @Html.ValidationMessageFor(model => model.Description)
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Price, new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Price)
                @Html.ValidationMessageFor(model => model.Price)
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Add Item" class="btn btn-default" />
                <div class="btn btn-default">
                    @Html.ActionLink("View Menu", "Menu", "Details", new { Id = ID })
                </div>
            </div>

        </div>
    </div>
}

Baahubali · Accepted Answer · 2014-03-19 02:39:37Z

1

because you are returning a redirecttoaction. you should use tempdata or session variable to save the value in the menuid and that should hold the value when it's a redirecttoaction.

answered Mar 19, 2014 at 2:39

Baahubali

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Comments

jmcilhinney · Accepted Answer · 2014-03-19 02:41:11Z

1

When you do a redirect you lose the contents of ViewData. TempData is preserved though, so you can use that if a redirect is a possibility. I don't know about ViewBag so you might test that.

answered Mar 19, 2014 at 2:41

jmcilhinney

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1 Comment

Craig W. Over a year ago

FWIW, ViewData and ViewBag are the same thing, just accessed differently. You can put a value into ViewBag (e.g. ViewBag.SomeValue = 1) and pull it out using ViewData (e.g. ViewData["SomeValue"]) and vice versa.

edgarpetrauskas · Accepted Answer · 2014-03-27 14:43:09Z

0

You already are passing other values through a view model, why not make a new property in that viewmodel and pass it along to the view?

answered Mar 27, 2014 at 14:43

edgarpetrauskas

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