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POC# MVC4: Replace <div> when selection is made from a Html.DropDownList using jQuery
 

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  1. POC# MVC4: Replace <div> when selection is made from a Html.DropDownList using jQuery
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    <p>I need to be able to populate data into a <code>&lt;div&gt;</code> or some other sort of section from an object after the corresponding string has been selected from a drop down list (lazy loading). </p> <p>When a chnage is made in the dropdownlist, I want the method in my controller to be called which will fill in <code>&lt;div id=result&gt;&lt;/div&gt;</code> with the output from the method.</p> <p>Perhaps I am approaching this problem wrong. I suspect the problem is in my JavaScript. Here is my approach:</p> <p>View:</p> <pre><code> &lt;div&gt;@Html.DropDownList("MyDDL") &lt;/div&gt; &lt;br&gt; &lt;div id="result"&gt;&lt;/div&gt; </code></pre> <p>JavaScript:</p> <pre><code>&lt;script type ="text/javascript"&gt; $(document).ready(function () { $("#MyDDL").change(function () { var strSelected = ""; $("#MyDDL option:selected").each(function () { strSelected += $(this)[0].value; }); var url = "HomeController/showInfo"; //I suspect this is not completely correct: $.post(url, {str: strSelected},function (result) { $("result").html(result); }); }); }); &lt;/script&gt; </code></pre> <p>Controller (Perhaps I shouldn't be using <code>PartialViewResult</code>):</p> <pre><code>public ActionResult Index() { List&lt;string&gt; myList = new List&lt;string&gt;(); List&lt;SelectListItem&gt; MyDDL = new List&lt;SelectListItem&gt;(); myList.Add("Tim"); myList.Add("Joe"); myList.Add("Jim"); //fill MyDDL with items from myList MyDDL = myList .Select(x =&gt; new SelectListItem { Text = x, Value = x }) .ToList(); ViewData["MyDDL"] = MyDDL; return View(); } [HttpPost] public PartialViewResult showInfo(string str) { Person p = new Person(str); //name is passed to constructor p.LoadInfo(); //database access in Person Model ViewBag.Info = p.Info; return PartialView("_result"); } </code></pre> <p>_result.cshtml:</p> <pre><code>&lt;p&gt; @ViewBag.Info &lt;/p&gt; </code></pre> <p>Thanks You.</p>
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