Object reference not set to an instance of an object. Model.country is returning null

Question

@Html.DropDownListFor(model => Model.country, Model.country)

public class Registration
{
    public List<SelectListItem> country { get; set; }

    public Registration()
    {            
        country = new List<SelectListItem>
        {
            new SelectListItem { Value = "1", Text = "India" },
            new SelectListItem { Value = "2", Text = "USA" },
            new SelectListItem { Value = "3", Text = "UK" },            
        };
    }
}

I am trying to populate the country in DropDownList in view but I am get error. It is returning Model.country is null. Country list is not bound to country.

Answer 1

Try the following example.

The Index action method:

public ActionResult Index()
{
    var model = new Registration()
    {
        country = new List<SelectListItem>
        {
            new SelectListItem { Value = "1", Text = "India" },
            new SelectListItem { Value = "2", Text = "USA" },
            new SelectListItem { Value = "3", Text = "UK" },
        }
    };
    return View(model);
}

The Index.cshtml markup:

@model Models.Registration
<div class="form-group">
    @Html.DropDownListFor(m => Model.country.GetEnumerator().Current, Model.country, "-select a value-")
</div>

I suppose you have an error in the view code that you don't included to the question.