Dropdownlistfor On your View return null, how to fix it?

Question

Hi Team

 

I need some help, i want to create list of values using dropdownlist for, now on the view i am getting a null object when accessing them.

@using (Html.BeginForm("SuperAdmin", "Home", FormMethod.Post))
{
    <div class="form-group row">
        <label for="Content-Licence" class="col-sm-3 col-form-label">Content Licence</label>
        <div class="col-sm-5">
        @Html.DropDownListFor(model => model.Dashboard.CourseLicence, new SelectList(Model.lsteNtsaDashboard))
        </div>
    </div>
}

public ActionResult SuperAdmin() {

var list = new List<string>() { "Private(Copyrighted)", "Public Domain", "Creative Commons Licences", "CC Attribution", "CC Attribution Share ALike", "CC Attribution Non-Commercial",
                "CC Attribution Non-Commercial Share Alike", "CC Attribution Non Directive", "CC Attribution Non-Commercial No Directives" };
            ViewBag.list = list;

return View(list);

}

public class eNtsaDashboardViewModel
{
        public string CourseName { get; set; }
        public List<eNtsaCourses> CourseLicence { get; set; }

}