Problem with MultiSelectList in ASP.NET MVC?

Question

What's wrong with this code? i don't know exactly why i can't select multiple values from this Dropdownlist (given below)?

<div class="form-group">
    <label>Movie</label>
    @Html.DropDownListFor(m => m.Movies, new MultiSelectList(Model.Movies, "id", "name"), "Select Movie", new { @class = "form-control"})
</div>

Source Code From Google Chrome:

<select class="form-control" id="Movies" name="Movies"><option value="">Select Movie</option>
   <option value="1">Movie 1</option>
   <option value="2">Movie 2</option>
   <option value="3">Movie 3</option>
   <option value="4">Movie 4</option>
   <option value="5">Movie 5</option>
   <option value="8">Movie 6</option>
   <option value="9">Movie 7</option>
</select>

What does the generated HTML look like? (View-source in the browser). — Neil
– Neil, Commented Jan 21, 2019 at 15:59
its generates the html as expected but i can't select multiple values from it using Ctrl key. — Rehan Shah
– Rehan Shah, Commented Jan 21, 2019 at 16:02
@Neil Look the Question one again please..it added the html source code as well.. — Rehan Shah
– Rehan Shah, Commented Jan 21, 2019 at 16:04
@Neil .. I got it....i have to also specify the multiple attribute to true. — Rehan Shah
– Rehan Shah, Commented Jan 21, 2019 at 16:08

TanvirArjel · Accepted Answer · 2019-01-21 16:03:36Z

1

Use ListBoxFor instead:

@Html.ListBoxFor(m => m.Movies, new SelectList(Model.Movies, "id", "name"), "Select Movie", new { @class = "form-control"})

Or add multiple attribute to the DropDownListFor

@Html.DropDownListFor(m => m.Movies, new MultiSelectList(Model.Movies, "id", "name"), "Select Movie", new {multiple = "true", @class = "form-control"})

answered Jan 21, 2019 at 16:03

TanvirArjel

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