how to set the selected value in dropdownlist mvc

Question

I have a dropdown in View

@Html.DropDownList("GenderAllowed", (SelectList)ViewBag.LocGenederAllowedList, new { @class = "form-control" })

and I am sending list of dropdown through ViewBag, and through model I am sending value that need to be selected in the dropdown.

But the value in dropdown is not selected.

My Controller

[HttpGet]
    public ActionResult EditVendorLocation(int VendorLocationID)
    {
        VendorLocationHandler obj = new VendorLocationHandler();
        LocationGrid objLoc = new LocationGrid();
        FillGenederAllowed(objLoc);
        objLoc = obj.GetVendorLocationForAdmin(VendorLocationID);

        return View(objLoc);
    }

Function for Viewbag

public void FillGenederAllowed(LocationGrid V)
{
    Dictionary<int, string> LocGenederAllowed = EnumHelper.GetGenderStates();
    SelectList LocGenederAllowedList = new SelectList(LocGenederAllowed, "key", "value");
    ViewBag.LocGenederAllowedList = LocGenederAllowedList;
}

Model is a list of values. Did you set any of them as `Selected = true`? — teo van kot, Nov 24 '15 at 08:49
Please refer below links http://stackoverflow.com/questions/15881575/get-the-selected-value-of-a-dropdownlist-asp-net-mvc http://stackoverflow.com/questions/27901175/how-to-get-dropdownlist-selectedvalue-in-controller-in-mvc4 — Nisha Salim, Nov 24 '15 at 08:50
Possible duplicate of [dropdownlist set selected value in MVC3 Razor](http://stackoverflow.com/questions/6807256/dropdownlist-set-selected-value-in-mvc3-razor) — Nikhil Vartak, Nov 24 '15 at 08:50
Just set the value of property `GenderAllowed` to match the value of one of your options and it will be selected. — , Nov 24 '15 at 10:06

score 1 · Answer 1 · answered Nov 24 '15 at 08:50

1

The SelectListItemsyou are passing to the DropDownList have a property Selected. In your ViewModel, set this to true for the item that should be selected initially.

answered Nov 24 '15 at 08:50

Georg Patscheider

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Ibrahim Khan · Answer 2 · 2015-11-24T09:26:08.130

0

You can do it in your controller action like following. Hope it helps.

ViewBag.LocGenederAllowedList = new SelectList(items, "Id", "Name", selectedValue);

dot net fiddle link: https://dotnetfiddle.net/PFlqei

edited Nov 24 '15 at 09:26

answered Nov 24 '15 at 08:52

Ibrahim Khan

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score 0 · Answer 3 · edited Nov 24 '15 at 09:08

Take a look at this class. All you need to do is create instances of them and set the Selected property to true for the item you want to be initially selected:

public ActionResult YourActionMethod(...)
{
    var selectItems = Repository.SomeDomainModelObjectCollection
      .Select(x => new SelectListItem {
        Text = x.SomeProperty,
        Value = x.SomeOtherProperty,
        Selected = ShoudBeSelected(x)
    });
    ViewBag.SelectListItems = selectItems;
    // more code
    var model = ...; // create your model
    return View(model);
}

You will need this overload of Html.DropDownListFor(...) in order to use this.

score 0 · Answer 4 · answered Nov 24 '15 at 08:53

0

You need this in your controller

   ViewBag.LocGenederAllowedList = 
       new SelectList(db.SomeValues, "Value", "Text",selectedValue);

And in your view

            @Html.DropDownList("GenderAllowed", 
         (SelectList)ViewBag.LocGenederAllowedList, new { @class = "form-control" })

answered Nov 24 '15 at 08:53

Bellash

7,560
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This is not workingSelectList LocGenederAllowedList = new SelectList(LocGenederAllowed, "key", "value", GenderAllow); – user4102564 Nov 24 '15 at 10:43

how to set the selected value in dropdownlist mvc

4 Answers4