CODEWITHSUNDEEP
c#asp.net-mvcrazor
TjDillashaw
TjDillashaw

Reputation: 817

get selected value from @HtmlDropDown

So i get values for my drop down list but i wanted to get selected value from this dropdown. How to do this ?

Model:

  public partial class Region
{
    public int Id_regionu { get; set; }
    public string Nazwa { get; set; }
}

Controller:

    public class HomeController : Controller
{


    private inzS9776Entities db = new inzS9776Entities();
    protected override void Dispose(bool disposing)
    {
        db.Dispose();
        base.Dispose(disposing);
    }
    public ActionResult Index()
    {
        ViewBag.Regiony = new SelectList(db.Region,"Id_regionu", "Nazwa");
        return View();
    }

and View with dropdown:

  <div class="jumbotron">
    <legend>
        <h2>Wyszukaj wycieczkę</h2></legend><br/>
    <form action="">
        <div class="container">
            Wybierz kierunek:
            @Html.DropDownList("Regiony",null, String.Empty)<br />
            Data wyjazdu:
            <input class="date" type="date" name="startDate"><br><br>
        </div>
    </form>

`

Upvotes: 0

Views: 155

Answers (2)

DDan
DDan

Reputation: 8286

Replace your <form action=""> to: 

@using (Html.BeginForm("MyActionName") {
    // ...  
    //here add to your dropdown and give it a name
    @Html.DropDownList("Regiony", null, String.Empty)
    // ...
}

The name attribute of your <select> element (dropdown list) will be "Regiony".

In your controller: 

public ActionResult MyActionName(string Regiony) {
   // here Regiony variable contains the selected value.
   // ...
}

Upvotes: 1

man_luck
man_luck

Reputation: 1666

Here is an approach which I take;

1) Retreive the items and store it in a list of SelectListItem. 2) Use the list of SelectListItem to assign it to a drop down list. 3) Use the model field to bind the drop down list with the selected value

View

<div class="col-sm-8">
    @{
        List<SelectListItem> listItems = new List<SelectListItem>();
        foreach (LookupData l in Model.HeatingTypeData)
        {
            listItems.Add(new SelectListItem { Text = l.LookupDescription, Value = l.LookupCode });
        }
    }
    @Html.DropDownListFor(m => m.HeatingType, listItems, new { @class = "form-control" })
    @Html.ValidationMessageFor(m => m.HeatingType)
</div>

Models: The model (VoidProperty) used in the example contains the HeatingType as a List of LookupData and a method to get the list:

public List<LookupData> HeatingTypeData { get; set; }

    public static List<LookupData> GetHeatingType()
    {
        return LookupData.GetDataList("HeatingType").OrderBy(m => m.SortOrder).ToList();
    }

and then the LookupData:

public class LookupData : ILookup
    {
        public string LookupCode { get; set; }
        public string LookupDescription { get; set; }
        public int SortOrder { get; set; }

        public static List<LookupData> GetDataList(string LookupGroup)
        {
            DBContexts.VoidsDBContext context = new DBContexts.VoidsDBContext();
            var Params = new SqlParameter { ParameterName = "LookupGroup", Value = LookupGroup };
            return context.Database.SqlQuery<LookupData>("p_LookupList @LookupGroup", Params).ToList();
        }
    }

The controller returns the view and pass an instance of the model;

VoidProperty _property = new VoidProperty();
......
......
_property.HeatingTypeData = VoidProperty.GetHeatingType();
......
return View(_property);

Upvotes: 0

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