RadComboBoxItemData on Client Side

[Yash]

Hi,
I am using a List of "RadComboBoxItemData" objects to load data into RadComboBox using the LoadOnDemand functionality. My Question is,
I have set few attributes on the server side and I want to access them on the client side. let me know how to do that.

For example:
ServerSide(Web Service):

List<RadComboBoxItemData> result = new List<RadComboBoxItemData>(context.NumberOfItems);

foreach(row in rows)

{

RadComboBoxItemData itemData = new RadComboBoxItemData();

itemData.Attributes.Add("HostName", row["HostName"].ToString());

itemData.Value = row["ID"].ToString();

result.Add(itemData);

}
return result;

ClientSide:

function onItemDataBound(sender, eventArgs) {//the combo item
 var item = eventArgs.get_item();
var dataItem = eventArgs.get_dataItem();
............AND THEN................??

Any Help will be appreciated. Secondly, I want to implement CheckBoxes so that I can add Multi-Select Functionality to it. Please suggest me a work around on this one.

Thanks in Advance. Appreciate your help.

[Kalina]

Hello Yash,

In order to obtain the RadComboBox item attribute on client-side you can handle OnClientItemsRequested or OnClientSelectedIndexChanged event in this way:

<script type="text/javascript">

    function OnClientItemsRequested(sender, eventArgs) {
      var  items = sender.get_items();
      for (i = 0; i < items.get_count(); i++) {

            alert(items.getItem(i).get_attributes().getAttribute("test"));
        }
    }

    function ItemChanged(combo, eventArgs) {
        var item = eventArgs.get_item();
        alert(item.get_attributes().getAttribute("test"));

    }
</script>

<telerik:RadComboBox ID="RadComboBox1" runat="server"
OnClientItemsRequested="OnClientItemsRequested"
OnClientSelectedIndexChanged="ItemChanged"

Please find more details about RadComboBox client-side events at this help article.
More about Attributes collection you can find here.

Regarding the scenario with the checkboxes that you describe - I can suggest you take a look at the first RadComboBox (“Type”) in this online demo.

All the best,
Kalina
the Telerik team

[Yash]

Hi Kalina, thanks for the reply. However, my second question might not be that clear. Let me re-phrase that for you.
I want to implement multi-select feature of RadComboBox when it is linked to a webservice. I know how to do it in general.

regards
Yash

[Kalina]

Hello Yash,

I am afraid that the server-side Templates are not supported when you use a web service to populate RadComboBox with data.
However you can use both LoadOnDemand and Templates at the same time - please take a look at this example.

All the best,
Kalina
the Telerik team