CODEWITHSUNDEEP
c#htmlasp.net-mvc
mecab mecaba
mecab mecaba

Reputation: 21

Set a selected value by default in List SelectList

I want to set a selected value in my select list by default.

Here I have this select list :

@{
List
<SelectListItem>
dateEcheancierCc = new List
<SelectListItem>
();
foreach (var dateEch in arrayDateEcheancierCc)
{
dateEcheancierCc.Add(new SelectListItem() { Text = dateEch, Value = dateEch },"Value","Text","Selected-value-by-default");
}
<div class="md-select px-0" style="min-width:0px">
   @Html.DropDownList("DateEche", dateEcheancierCc, new { @class = "form-conrol" })
</div>
}

Here I'am trying to set "Selected-value-by-default" is selected by default but it is not working for me why ?

Here the Dropdownlist:

 @Html.DropDownList("DateEche", dateEcheancierCc, new { @class = "form-conrol" })

Upvotes: 0

Views: 6219

Answers (4)

J. Hsu
J. Hsu

Reputation: 67

dateEcheancierCc.Add(new SelectListItem() { Text = dateEch, Value = dateEch },"Value","Text","Selected-value-by-default");

change to like this

dateEcheancierCc.Add(new SelectListItem() { Text = dateEch, Value = dateEch, Selected = true });

make sure the item that you set "Selected = true" is the only one in list

I don't know your rule but you can try like this

for example : I have an array { "Jeffrey", "John", "Joe", "Josh" }, and I want set Jeffrey as default selected

if (dateEch == "Jeffrey")
    dateEcheancierCc.Add(new SelectListItem() { Text = dateEch, Value = dateEch, Selected = true });
else
    dateEcheancierCc.Add(new SelectListItem() { Text = dateEch, Value = dateEch });

Upvotes: 1

Anoos
Anoos

Reputation: 186

Replace your DropdownList as below,

<div class="md-select px-0" style="min-width:0px">
   @Html.DropDownList("DateEche",new SelectList(dateEcheancierCc,"Value","Text","Selected-value-by-default"), new { @class = "form-conrol" })
</div>

and selectList as

foreach (var dateEch in arrayDateEcheancierCc)
{
dateEcheancierCc.Add(
            new SelectListItem() { Text = dateEch, Value = dateEch }

            );
}

https://dotnetfiddle.net/RFgoD1

Upvotes: 0

Mohammed Mukarram
Mohammed Mukarram

Reputation: 61

You need to add Selected=true while building the SelectListItem. 

foreach (var dateEch in arrayDateEcheancierCc)
{
dateEcheancierCc.Add(new SelectListItem() { Text = dateEch, Value = dateEch ,Selected = true });
}

Upvotes: 0

Muhammad Salman Rafique
Muhammad Salman Rafique

Reputation: 11

if your views have model then you can use like this

                @Html.DropDownListFor(model => model.SelectedId, new SelectList(Model.SelectCollections, "Value", "Text", Model.ValueToBeSelectedInCollection))

Upvotes: 0

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