Populating ASP.NET MVC DropDownList

Question

OK, I've been Googling for hours and trying everything and can't get anything to work. I am learning MVC using Sharp Architecture and have generated some basic forms for creating Client objects. I want to fill the state drop down list with a list of US states and let the user pick from that list. I am able to populate the list and get the value back (to save the client) but when I go to edit the client, the client's current state is not selected. I have set the selected value in the SelectList:

<li>
    <label for="Client_StateProvince">StateProvince:</label>
    <div>
        <%= Html.DropDownListFor(c=>c.Client.StateProvince, new SelectList(Model.StateProvinces, "id", "Name", Model.Client.StateProvince), "-- Select State --")%>
    </div>
    <%= Html.ValidationMessage("Client.StateProvince")%>
</li>

This does not seem to be good enough. What am I missing?

Please consider rewriting your question title to be more specific. — Dan Atkinson
– Dan Atkinson, Commented Aug 19, 2009 at 18:43
What I was needing to do is have an edit page where I edit a (domain object)'s information, in this case a Client object. when I go to edit it, I needed the state part of the form to be a drop down with a list of states (standard stuff), but after it populates it when I am in edit mode, I need it to select the state of the currently editable object. I was populating the drop down, but the current state wasn't selected. once I set the name of the DropDownList (represented by lambda here) to the Id of the state (the value I am using for the value field on the drop down list) I was good to go. — leebrandt
– leebrandt, Commented Aug 20, 2009 at 0:42

Scott Baker · Accepted Answer · 2011-04-25 17:26:03Z

78

<%= Html.DropDownListFor(c => c.Client.StateProvince.Id, 
                              new SelectList(Model.StateProvinces, 
                                             "id", 
                                             "Name", 
                                             Model.Client.StateProvince), 
                              "-- Select State --")%>

This does it.

Hope this helps someone else.

~Lee

edited Apr 25, 2011 at 17:26

Scott Baker

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answered Aug 19, 2009 at 1:42

leebrandt

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1 Comment

Patrick Desjardins Over a year ago

You are right, the first parameter needs to be the same type as the last one. Worked for me too ! Thank you.

3Dave · Accepted Answer · 2010-10-09 20:06:38Z

7

Worked perfectly for me thanx! I used it to set a parent relation on a subcategory:

<%= Html.DropDownListFor(
 model => model.Category.ParentId,
 new SelectList(Model.Categories,
 "CategoryId",
 "Name",
  Model.Categories.Where(x => x.CategoryId == Model.Category.ParentId).Single()))%>

Jeroen

edited Oct 9, 2010 at 20:06

3Dave

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answered Dec 30, 2009 at 23:17

user241243

Comments

bcahill · Accepted Answer · 2010-10-13 18:38:55Z

4

I did it this way. Works well.

Controller

IFarmModelInterface service2 = new FarmModelRepository();
ViewData["Farms"] = new SelectList(service2.GetFarmNames(), "id", "FarmName", "XenApp");

View

<%: Html.DropDownListFor(m => m.Farm, (ViewData["Farms"] as SelectList)) %>

answered Oct 13, 2010 at 18:38

bcahill

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Comments

spolto · Accepted Answer · 2012-10-18 19:45:56Z

3

public ActionResult  AllUsers()
{
    List<Users> users = userRep.GetUsers();
    var listUsers = (from u in users.AsEnumerable()
                     select new SelectListItem
                     {
                        Text = u.UserName,
                        Value = u.UserId.ToString(),
                        Selected = (u.UserId==6)
                     }).AsEnumerable();
    ViewBag.ListItems = listUsers;
    //ViewBag.SelectedItem = 2;
    return View();
}

In AllUsers.cshtml

<p>@Html.DropDownList("ListItems")</p>

edited Oct 18, 2012 at 19:45

spolto

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answered Oct 18, 2012 at 19:39

Jasvir Singh

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Comments

Dennis Shtemberg · Accepted Answer · 2010-04-15 15:24:23Z

2

<%= Html.DropDownListFor(c => c.Client.StateProvince, new SelectList(Model.StateProvinces, "Id", "Name")) %>

and override ToString() for StateProvince to return Id, i.e.:

return Id.ToString();

This works but is not a perfect solution...

Dennis

edited Apr 15, 2010 at 15:24

answered Apr 15, 2010 at 15:08

Dennis Shtemberg

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Comments

Thisara Subath · Accepted Answer · 2017-08-08 09:09:31Z

This is View - MVC Controller

@Html.DropDownListFor(m => m.Entity, new ABC.Models.DropDownPopulate().MyMethod, new { @class = "form-control input-inline input-medium" })

MyMethod Get Data List Bind With Dropdown Using SelectListItems

 public List<SelectListItem> MyMethod
        {
            get
            {
                List<SelectListItem> dropdownList = new List<SelectListItem>();
                var items = new DropDown_Bl().GetAll();
                foreach (var item in items)
                {
                    SelectListItem dropdownItem = new SelectListItem();
                    dropdownItem.Value = item.RnID.ToString();
                    dropdownItem.Text = item.Description;
                    dropdownList.Add(dropdownItem);
                }
                dropdownList.Insert(0, new SelectListItem() { Text = "Please Select", Value = "", Selected = true });
                return dropdownList;
            }
        }

GetAll Method In Dropdown_Bl - Used to get data as list from database

  public List<My_Table> GetAll()
        {
            var Items = _Context.MyRepository.GetMany(q => q.Area == "ASD").ToList();
            return Items ;
        }

Jaap · Accepted Answer · 2016-12-15 09:03:16Z

0

public ActionResult  AllUsers() {
    List<Users> users = userRep.GetUsers();
    var listUsers = (from u in users.AsEnumerable()
                     select new SelectListItem
                     {
                        Text = u.UserName,
                        Value = u.UserId.ToString(),
                        Selected = (u.UserId==6)
                     }).AsEnumerable();
   // ViewBag.ListItems = listUsers;
   ViewData["tempEmpList"]=listUsers;
    return View(); }

Fill Dropdown

@Html.DropDownList("SelectedEmployee", new SelectList((IEnumerable) ViewData["tempEmpList"], "Id", "Name"))

edited Dec 15, 2016 at 9:03

Jaap

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answered Dec 15, 2016 at 8:35

Krishan Pal

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