asp.net mvc 4 - How to set Default value in MVC 4 razor DropDownListFor

Question

I Have MVC Razor view with lot of DropDrownFor. i wanna set default value to that DropdownListFor.

This is my View:

@Html.DropDownListFor(model => model.DestCountryId, ViewBag.CountryIdList as SelectList, "select", new { @class = "form-control input-sm" })

This is my ViewBag:

 ViewBag.CountryIdList = new SelectList(db.Countries.Where(a => a.Currency != null), "Id", "Name");

Ho w to set Default value in this scenario

Answer 1

you need to do like this:

ViewBag.CountryIdList = new SelectList(db.Countries.Where(a => a.Currency != null), "Id", "Name",1);

For Example in the Countries List, you have a item CountryName and its id is 1, you need to pass the 1 in the last parameter, and element with that Id 1 will be shown selected by default.

Example:

public class Country
{
    public int Id { get; set; }
    public string Name { get; set; }
}

List<Country> list = new List<Country>();

list.Add(new Country{ Id = 1, Name="Test"});
list.Add(new Country{ Id = 2, Name="Test2"});

now in controller action:

int Selected = 2;
ViewBag.CountryIdList = new SelectList(list, "Id", "Name",Selected);

Now the Test2 will be shown selected default in View.