Newbe Dev Stack

Answer : I had the same problem. After a couple of hours of trouble shooting found that, I had <script type="text/javascript" src="Scripts/bootstrap.min.js"></script> <script type="text/javascript" src="Scripts/jquery-2.1.1.min.js"></script> instead of, <script type="text/javascript" src="Scripts/jquery-2.1.1.min.js"></script> <script type="text/javascript" src="Scripts/bootstrap.min.js"></script> Hope this helps someone I had the same problem when I included the bootstrap.min.js twice. Removed one of them and it began working. FYI: If you have bootstrap.js, you should not add bootstrap-dropdown.js. I'm unsure of the result with bootstrap.min.js.

Answer : You could try this: @Html.DropDownList("country", new SelectList(ViewBag.countries), "-select- ", new { @class="chzn-select", @style="width:160px;" }) In your collection ViewBag.Countries just insert a dummy record at the from of the collection with the name "-select-". You should be able to force the selected item with an alternate constructor like this: @Html.DropDownList("country", new SelectList(ViewBag.countries as System.Collections.IEnumerable, "name", "name", "-select-"), new { @class="chzn-select", @style="width:160px;" } ) A quick and (not so) dirty solution involving jQuery. Instead of adding a dummy item at the start of the list, prepend a new option that is disabled. The main advantage is that you don't have to mess with a dummy item in your list , and most important, you won't be able to select that dummy item in the page : ...

Answer : Update : To create a popup menu in android with Kotlin refer my answer here. To create a popup menu in android with Java: Create a layout file activity_main.xml under res/layout directory which contains only one button. Filename: activity_main.xml <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MainActivity" > <Button android:id="@+id/button1" android:layout_width="wrap_content" android...