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POPopulating dropdown with JSON result - Cascading DropDown using MVC3, JQuery, Ajax, JSON
 

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    <p>I've got a cascading drop-drown using mvc. Something like, if you select a country in the first-dropdown, the states of that country in the second one should be populated accordingly.</p> <p>At the moment, all seems fine and I'm getting Json response (saw it using F12 tools), and it looks something like <code>[{ "stateId":"01", "StateName": "arizona" } , { "stateId" : "02", "StateName":"California" }, etc..] ..</code></p> <p>I'd like to know how to populate my <code>second-dropdown</code> with this data. My second drop-down's id is "<code>StateID</code>". Any help would be greatly appreciated. </p> <p>Below is the code used to produce the JSON Response from the server:</p> <pre><code>[HttpPost] public JsonResult GetStates(string CountryID) { using (mdb) { var statesResults = from q in mdb.GetStates(CountryID) select new Models.StatesDTO { StateID = q.StateID, StateName = q.StateName }; locations.statesList = stateResults.ToList(); } JsonResult result = new JsonResult(); result.Data = locations.statesList; return result; } </code></pre> <p>Below is the client-side HTML, my razor-code and my script. I want to write some code inside "<code>success</code>:" so that it populates the States <code>dropdown</code> with the JSON data.</p> <pre><code>&lt;script type="text/javascript"&gt; $(function () { $("select#CountryID").change(function (evt) { if ($("select#CountryID").val() != "-1") { $.ajax({ url: "/Home/GetStates", type: 'POST', data: { CountryID: $("select#CountryID").val() }, success: function () { alert("Data retrieval successful"); }, error: function (xhr) { alert("Something seems Wrong"); } }); } }); }); &lt;/script&gt; </code></pre>
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