[Solved] How should I bind my Combo

[william]

On initial entry (create) I want my combo to stay empty. Once the user has entered enough data, I force an Ajax/JQuery partial update on data from an @Html.EditorFor control.

it's at this point I want to trigger the population of the combo.

placing something like

.DataBinding(binding => binding.Ajax().Select("GetDropDownCC", "RoadRisk"))

on the combo will result in the method being performed regardless. I thought I might be able to do something on an 'onFocus' event but there isn't one.

How can I make this work such that the combo gets populated once I have placed a value into my EditorFor Control?

[william]

ok, I found at the bottom of this link how to attach on the fly.

http://www.telerik.com/help/aspnet-mvc/telerik-ui-components-combobox-client-api-and-events.html

However, I really want to loop the returned object and build the data up. when I do this it just becomes one long string in the dropdown as it doesn't recognise the Text and Value part correctly it thinks this is part of the text:

var mydata = "";
                $.each(data.VehicleTypes, function (index, itemData) {
                    mydata = mydata + '{ Text: "' + itemData.Description +
                                     '", Value: "' + itemData.Id + '" },';
                });
                if (mydata.length > 0) {
                    mydata = mydata.substring(0, mydata.length - 1);
                }
                var dataSource = [
                    mydata
                ];
                telerikVehicles.dataBind(dataSource);

How should I build up mydata so that the control recognises the format correctly.