JQDropDownList supports the jQuery Templates engine. Just define the template using the jQuery Template standard (inside a script tag) and set an ID for the template. Then, set the JQDropDownList.TemplateID property of the dropdownlist to the ID of the template and the control will use the template to render its items. Note, that you can provide custom attributes for the dropdownlist item, in addition to the Text and Value properties. The JQListItem.Options collection can hold custom attributes, like "image", "details" - anything, which you can later use in the template for rendering purposes. Please, review to the View tab for details.
@using System.Collections.Specialized
@using Trirand.Web.Mvc

<!DOCTYPE html>
<html lang="en-us">
<head>
    <meta charset="utf-8">
    <title>jqDropDownList for ASP.NET MVC - Templated Items</title>    
    <!-- The jQuery UI theme that will be used by jqDropDownList -->
    <script src="~/Scripts/jquery-3.0.0.min.js" type="text/javascript"></script>
    <!-- The jqTreeView client-side javascript -->
    <script src="~/Scripts/trirand/jquery.jqDropDownList.min.js" type="text/javascript"></script>
    <!-- The jqTemplating javascript -->
    <script src="~/Scripts/trirand/jquery.jqTemplating.min.js" type="text/javascript"></script>
    <!-- The jQuery UI theme that will be used by the grid. -->
    <link rel="stylesheet" type="text/css" href="http://code.jquery.com/ui/1.11.4/themes/redmond/jquery-ui.css" />
    <!-- The jQuery UI theme extension jqTreeView needs -->
    <link rel="stylesheet" type="text/css" href="~/Content/themes/ui.jqDropDownList.css" />
</head>

<body>    
    
    <script id="movieTemplate" type="text/x-jquery-tmpl"> 
        <table cellpadding="0" celspacing="0" style="width:350px ">
            <tr>
                <td rowspan="2" valign="middle" style="width:50px"><img src="${image}" /></td>
                <td style="width:300px"><b>${text}</b> (${year})</b><br>${actors}</td>
            </tr>
        </table>
    </script>
    
    <script id="alternativeMovieTemplate" type="text/x-jquery-tmpl"> 
        <table cellpadding="0" celspacing="0" style="width:320px ">
            <tr>                
                <td style="width:250px"><b>${text}</b> (${year})</b><br>${actors}</td>
                <td rowspan="2" align="right" valign="middle" style="width:50px"><img src="${image}" /></td>
            </tr>
        </table>
    </script>


    @(Html.Trirand().JQDropDownList(
                new JQDropDownList
                {
                    Height = 200,
                    Width = 350,
                    ItemTemplateID = "movieTemplate",
                    Items = new List<JQListItem>
                    {
                        new JQListItem { 
                            Text = "American Beauty",
                            Options = new NameValueCollection
                            {
                                { "year", "1999" },
                                { "actors", "Kevin Spacey, Annette Benning" },
                                { "image", "/content/images/american_beauty.jpg"}
                            }
                        },
                        new JQListItem { 
                            Text = "Lost in Translation",
                            ItemTemplateID = "alternativeMovieTemplate",
                            Options = new NameValueCollection
                            {
                                { "year", "2003" },
                                { "actors", "Bill Murray, Scarlett Johansson" },
                                { "image", "/content/images/lost_in_translation.jpg"}
                            }
                        },
                        new JQListItem { 
                            Text = "Fight Club",
                            Options = new NameValueCollection
                            {
                                { "year", "1999" },
                                { "actors", "Brad Pitt, Edward Norton" },
                                { "image", "/content/images/fight_club.jpg"}
                            }
                        }                        
                    }
                }, "dropdownlist"))
            
    <br /><br /><br />
    <br /><br /><br />
    
    <div>
          
    </div>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Trirand.Web.Mvc;

namespace MVCDemo.Controllers.DropDownList
{
    public partial class DropDownListController : Controller
    {
        public ActionResult Templates()
        {
            return View();
        }         
    }
}
Switch theme:


Theming is based on the very popular jQuery ThemeRoller standard. This is the same theming mechanism used by jQuery UI and is now a de-facto standard for jQuery based components. The benefits of using ThemeRoller are huge. We can offer a big set of ready to use themes created by professional designers, including Windows-like themes (Redmond), Apple-like theme (Cupertino), etc. In addition to that any jQuery UI controls on the same page will pick the same theme.

Last, but not least, you can always roll your own ThemeRoller theme, using the superb Theme Editor

To use a theme, simply reference 2 Css files in your Html <head> section - the ThemeRoller theme you wish to use, and the jqGrid own ThemeRoller Css file. For example (Redmond theme):

<link rel="stylesheet" type="text/css" media="screen" href="/themes/redmond/jquery-ui-1.8.2.custom.css" />
<link rel="stylesheet" type="text/css" media="screen" href="/themes/ui.jqgrid.css" />