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I'm building my first MVC application after years of doing webforms, and for some reason I am not able to make this work:
@Html.DropDownList("PriorityID", String.Empty, new {@class="textbox"} ) Error message:
System.Web.Mvc.HtmlHelper<SPDR.Models.Bug>' does not contain a definition for DropDownList and the best extension method overload System.Web.Mvc.Html.SelectExtensions.DropDownList(System.Web.Mvc.HtmlHelper, string, System.Collections.Generic.IEnumerable<System.Web.Mvc.SelectListItem>, object) has some invalid arguments
Any help greatly appreciated!
498
HTML) Use any element to open the dropdown content, e.g. a <span>, or a <button> element. Use a container element (like <div>) to create the dropdown content and add whatever you want inside of it. Wrap a <div> element around the elements to position the dropdown content correctly with CSS.
Example Explained Use any element to open the dropdown menu, e.g. a <button>, <a> or <p> element. Use a container element (like <div>) to create the dropdown menu and add the dropdown links inside it. Wrap a <div> element around the button and the <div> to position the dropdown menu correctly with CSS.
DropDownList(String, String, IEnumerable<SelectListItem>, Object, Object) Returns an HTML drop-down list control that has the specified name, custom attributes defined by an attribute object, and default selection, and that contains the specified list items and default item.
Looking at the controller, and learing a bit more about how MVC actually works, I was able to make sense of this.
My view was one of the auto-generated ones, and contained this line of code:
@Html.DropDownList("PriorityID", string.Empty) To add html attributes, I needed to do something like this:
@Html.DropDownList("PriorityID", (IEnumerable<SelectListItem>)ViewBag.PriorityID, new { @class="dropdown" }) Thanks again to @Laurent for your help, I realise the question wasn't as clear as it could have been...
UPDATE:
A better way of doing this would be to use DropDownListFor where possible, that way you don't rely on a magic string for the name attribute
@Html.DropDownListFor(x => x.PriorityID, (IEnumerable<SelectListItem>)ViewBag.PriorityID, new { @class = "dropdown" }) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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