Simple Dropdown list from List<model>

Question

The model

@model List<Survey.SurveyQuestion>

SurveyQuestion has two properties, QuestionId and QuestionText

Html.DropDownList("Questions", new SelectList(@Model))

@Html.DropDownList("Questions", new SelectList(@Model), "QuestionId", "QuestionText")

Output from above code:

Output from above code:

Unable to use DropDownListFor as it does not recognize field QuestionId (or infact any field).

@Html.DropDownListFor(item => item.QuestionId, new SelectList(Model, 
    "QuestionId", "QuestionText"), "--Select --"))

The below code displays all data correctly:

@foreach (var item in Model)
{
    <p>@item.QuestionId - @item.QuestionText</p>
}

whats strange about this is your are NOT using a dropdownlistfor. I would recommend it, but since you're not, the error is odd. — Dave Alperovich
– Dave Alperovich, Commented Feb 24, 2013 at 20:25
problem is @Html.DropDownListFor(item => item.QuestionId ...), the QuestionId is not recognized, compiler error. — A G
– A G, Commented Feb 24, 2013 at 20:29
which we could tackle, IF YOU WERE USING A DROPDOWNLISTFOR. I'm stumped cause i see you using a dropdownlist -- no FOR — Dave Alperovich
– Dave Alperovich, Commented Feb 24, 2013 at 20:30
OK, dropdownlist for requires a model variable to bind to with a lambda. do you know what that means? — Dave Alperovich
– Dave Alperovich, Commented Feb 24, 2013 at 20:36

Mathew Thompson · Accepted Answer · 2013-02-24 21:32:28Z

4

You're setting up your SelectList wrong. Try this instead (added linespaces for readability on SO):

@Html.DropDownList(
    "Questions",
     Model.Select(m => new SelectListItem 
         {
             Value = m.QuestionId.ToString(),
             Text = m.QuestionText
         }))

answered Feb 24, 2013 at 21:32

Mathew Thompson

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4 Comments

Dave Alperovich Over a year ago

yup, thats it. I shouldve looked closer.

Mathew Thompson Over a year ago

@DaveA Hehe yeah those html helper overloads can be a nightmare, mixing the order ofhtml attributes and route values on an actionlink always catches me out :)

A G Over a year ago

Thanks, geez, so stupid of me... just mixed the order. This @Html.DropDownList("QuestionId", new SelectList(@Model, "QuestionId", "QuestionText")) also works.

Mathew Thompson Over a year ago

@AseemGautam Np glad I could help :). Just a side note, you don't need the @ before the word Model, as you're already in Razor code (inside the DropDownList call) :)

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