OnClientSelectedIndexChanging event not fired in Javascript

[Saad]

Hi I have a RadComboBox in my app where i intend to use OnClientIndexChanging event to cancel the changing of the values based on some specific conditions, however the event is not getting fired in client side JS code ​​

 

<telerik:RadComboBox ID="cbStyleSize" style="width:100%" EmptyMessage="--Select Style Size--" runat="server" RenderMode="Native" DataTextField="Name" DataValueField="ID" OnClientSelectedIndexChanging="OnChanging_Style" OnClientSelectedIndexChanged="OnChanged_Style">
</telerik:RadComboBox>

As you can see i have both OnClientSelectedIndexChanged and OnClientSelectedIndexChanging events , however only OnClientSelectedIndexChanged event is getting fired in JS but not the Changing event.

01.function OnChanged_Style(sender, eventArgs) {
02.    var item = eventArgs.get_item();
03.    var item_text = item.get_text();
04.    var itemValue = item.get_value();
05.
06.    var ret = ExtractComboValues(itemValue);
07.
08.    if (ret) {
09.        setData({
10.            sID: ret.sID,
11.            Name: item_text,
12.            fPrice: ret.price
13.        });
14.
16.    }
17.}
18.
19.function OnChanging_Style(sender, eventArgs) {
20.    var item = eventArgs.get_item();
21.    var item_text = item.get_text();
22.    var itemValue = item.get_value();
23.
24.    var ret = ExtractComboValues(itemValue);
25.    var targetID = ret.sID;
26.
27.    var errFunc  = function(e)  { e.set_cancel(true); }
28.    var succFunc = function(e)  { e.set_cancel(false);}
29.
30.    if (ret) {
31.        VerifySelection(targetID, succFunc, eventArgs, errFunc, eventArgs);
32.    }
33.}

 

Just on a side note , the OnChanging_Style JS function , makes an AJAX call through VerifySelection function and based on the result of that function set_cancel(true) is being called. .Do you think its legal that an AJAX function whenever returns can revert back the ComboBox fired event ?

 

[Saad]

anyone care to comment ?

[Nencho]

Hello Saad,

When the RadComboBox is in Native render mode it is rendered as a simple html select element. In this case the OnClientSelectedIndexChanging client-side event is not supported, as there is no corresponding event to handle for this action.

Regards,
Nencho
Telerik