CODEWITHSUNDEEP
c#asp.net-mvc
Sizzling Code
Sizzling Code

Reputation: 6070

DropDownListFor gives error Object reference not set to an instance of an object

I want to have a dropdown in my view, but that dropdown should have categories loaded from database.

I am using Entity Framework Code First Approach in MVC 5.

Here is my Model:

public class CreateProductModel
{
   
        [Required]
        public string Name { get; set; }

        [Required]
        public int CategoryID { get; set; }
        public SelectList Categories { get; set; } 

        [MaxLength]
        public double Price { get; set; }

        public string Description { get; set; }

    
}

Controller:

public ActionResult Index()
{
    var model = new ProductModel();
    model.CreateProductModel.Categories = new SelectList(_db.Categories, "CategoryID", "Name", 1);
    return View(model);
}

View:

                <div class="form-group">
                    @Html.LabelFor(model => model.CreateProductModel.CategoryID, new { @class = "col-lg-2 control-label" })
                    <div class="col-lg-10">
                        @Html.DropDownListFor(model => model.CreateProductModel.CategoryID, new SelectList(Model.CreateProductModel.Categories, "CategoryID", "Name", 1), "Please Select Category");
                    </div>
                </div>

I am getting this error:

enter image description here

Upvotes: 0

Views: 927

Answers (1)

Backs
Backs

Reputation: 24903

Initialize CreateProductModel property:

var model = new ProductModel();
model.CreateProductModel = new CreateProductModel();
model.CreateProductModel.Categories = new SelectList(_db.Categories, "CategoryID", "Name", 1);

Upvotes: 2

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