ASP.NET MVC: How to show value in a label from selected Drop Down List item?

Posted by Lillie on Stack Overflow See other posts from Stack Overflow or by Lillie
Published on 2010-02-26T12:55:08Z Indexed on 2010/03/19 21:01 UTC
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Hi!

I'm trying to show a value of selected Drop Down List item in a label. I managed to make this work with Web Forms but with MVC I'm totally lost. My Index looks like this:

[...] 
   <% using (Html.BeginForm()) { %>
       <table>
          <tr>
             <td>Processor</td>
             <td><%= Html.DropDownList("lstProcessor1", new SelectList((IEnumerable)ViewData["Processor1List"], "product_price", "product_description")) %></td>
          </tr>
          <tr>
             <td>Total Amount</td>
             <td>0,00 €</td>
          </tr>
         </table>
      <input type="submit" value="Submit" />
   <% } %>
    [...]

And my HomeController starts with:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;
using MvcApplication1.Models;

namespace MvcApplication1.Controllers
{
    [HandleError]
    public class HomeController : Controller
    {
        // Connect database
        DB50DataContext _ctx = new DB50DataContext();

        // GET: /Home/
        public ActionResult Index()
        {
            // Search: Processors
            var products = from prod in _ctx.products
                           where prod.product_searchcode == "processor1"
                           select prod;

            ViewData["Processort1List"] = products;

            return View();
        }

I would like the product_price to show on the second line of the table, where it now says 0,00 €. It should also update the price automatically when the item from the Drop Down List is changed.

I guess I should use JQuery but I have no idea how. Could someone please give me some tips how to do this?

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