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Events Overview

RadCheckBoxList exposes several client-side events that allow easy and flexible use in a wide range of application scenarios:

To handle the desired event, the user must set the respective property to the name of the JavaScript function handling the event or to an anonymous JavaScript function. Here is an example:

Example 1: Passing a named (non-anonymous) JavaScript function.

<script type="text/javascript">
    function OnItemClicked(sender, args) {
        var selectedItem = args.get_item();
        alert(selectedItem.get_text());
    }
</script>

<telerik:RadCheckBoxList runat="server" ID="RadCheckBoxList1">
    <ClientEvents OnItemClicked="OnItemClicked" />
    <Items>
        <telerik:CheckBoxListItem Text="English" Selected="true" />
        <telerik:CheckBoxListItem Text="German" />
        <telerik:CheckBoxListItem Text="French" />
    </Items>
</telerik:RadCheckBoxList>
RadCheckBoxList1.ClientEvents.OnItemClicked = "OnItemClicked";  //passing the name of the JS function
RadCheckBoxList1.ClientEvents.OnItemClicked = "OnItemClicked"  'passing the name of the JS function

Example 2: Passing an anonymous JavaScript function.

<telerik:RadCheckBoxList runat="server" ID="RadCheckBoxList1">
    <ClientEvents OnItemClicked="function(sender,args){var selectedItem = args.get_item(); alert(selectedItem.get_text());}" />
    <Items>
        <telerik:CheckBoxListItem Text="English" Selected="true" />
        <telerik:CheckBoxListItem Text="German" />
        <telerik:CheckBoxListItem Text="French" />
    </Items>
</telerik:RadCheckBoxList>
RadCheckBoxList1.ClientEvents.OnClientClicked = "function(sender,args){var selectedItem = args.get_item(); alert(selectedItem.get_text());}"; //passing an anonymous JS function
RadCheckBoxList1.ClientEvents.OnClientClicked = "function(sender,args){var selectedItem = args.get_item(); alert(selectedItem.get_text());}"  'passing an anonymous JS function

See Also