Set the selected item in dropdownlist in MVC3

I have to set the selected item for a dropdownlist in view. But its not working.


<div class="editor-label"> @Html.LabelFor(model => model.Gender) </div> <div class="editor-field"> @Html.DropDownListFor(model => model.Gender,Model.GenderList) </div>


[Required(ErrorMessage = "Please select gender!")] [Display(Name = "Gender")] public string Gender { get; set; } public IEnumerable<SelectListItem> GenderList { get { return new[] { new SelectListItem { Value = "0", Text = "Select" }, new SelectListItem { Value = "1", Text = "Male" }, new SelectListItem { Value = "2", Text = "Female" }, }; } }

The gender property has the value needs to be selected in the list. Still not working.

Where i'm wrong?


First, create your ViewModel.

public class MovieViewModel { public string Genre { get; set; } public IEnumerable<SelectListItem> GenreList { get { yield return new SelectListItem { Text = "Comedy", Value = "1" }; yield return new SelectListItem { Text = "Drama", Value = "2" }; yield return new SelectListItem { Text = "Documentary", Value = "3" }; } } }

Then, your controller creates a new instance of this ViewModel and sends it to the view.

public class HomeController : Controller { // // GET: /Home/ public ActionResult Index() { var viewModel = new MovieViewModel { Genre = "2" }; return View(viewModel); } }

Finally, the view displays the dropdownlist using the ASP.NET wrapper [Html.DropDownListFor()][1].

@model MvcApplication1.Models.MovieViewModel <!DOCTYPE html> <html> <head> <title>My movie</title> </head> <body> <div> @Html.DropDownListFor(m => m.Genre, Model.GenreList) </div> </body> </html>

The selected value is then automatically chosen according the ViewModel. There's no need to manually set the Selected property of the objects SelectListitem.


The SelectListItem type has a Selected property, you need to is to true on the item you wish to set as selected.

You can either set it statically like the following:

public IEnumerable<SelectListItem> GenderList { get { [...] new SelectListItem { Value = "0", Text = "Select", Selected = true}, [...] } }

Or enumerate over the collection for a match with Gender value:

var selected = GenderList.SingleOrDefault(item => item.Text.Equals(this.Gender)); if (selected != null) selected.Selected = true;


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