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    <p>I have achieved it. Where selected value is in Hidden Filed.</p> <p>And make sure that your controller method returns json object with two fields.</p> <pre><code>&lt;script type="text/javascript"&gt; var ddlCountry; var ddlStateID; function pageLoad() { ddlStateID = $get("StateID"); ddlCountry = $get("CountryID"); $addHandler(ddlCountry, "change", bindOptions); bindOptions(); } function bindOptions() { ddlStateID.options.length = 0; var CountryID = ddlCountry.value; var stateSelected = document.getElementById('StateSelected').value; if (CountryID) { var url = "/Student/States/" + CountryID; $.getJSON(url, null, function(data) { $("#StateID").empty(); $.each(data, function(index, optionData) { if (stateSelected == optionData.ID) { $("#StateID").append("&lt;option value='" + optionData.ID + "' selected&gt;" + optionData.Name + "&lt;/option&gt;"); } else { $("#StateID").append("&lt;option value='" + optionData.ID + "'&gt;" + optionData.Name + "&lt;/option&gt;"); }; }); }); }; } </code></pre> <p></p> <p><strong>ADDED</strong> controller (My url is student/state i.e. in student controller I put following code)</p> <pre><code>public ActionResult States(int id) { var states = db.states.Select(s =&gt; new { ID = s.ID, Name = s.Name }).OrderBy(s=&gt;s.Name).ToList(); return Json(states); } </code></pre> <p>You can return any number of fields but if any of them will have a null value then it will not converted in json object. I am not sure about this but it wasn't working when I return whole state object. At that time states table was having field called deletedby and it was containing null values!. But when I return only two 'needed' fields then it is working properly!</p>
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    1. POHow do I display selected value in a cascading drop down list?
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    1. COPlease can you post your controller method which returns json object with two fields?
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    2. COPlease tell me if it is not working
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

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