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This article demonstrates how you can use the OnClientItemDataBound event to manipulate the items of a RadSlider that you have bound to a client-side data source.

The OnClientItemDataBound event is raised when an item in the slider is data-bound to the provided data source.

The event handler receives two parameters:

  • The client-side object of the RadSlider instance that fired the event.

  • An event arguments object containing the following methods:

    • get_dataItem() - returns the client-side data object of the slider’s item.

    • get_sliderItem() - returns the client-side object of the slider’s item.

You can check in Example 1 how this event can be used for modifying the text in the slider items after they are data bound.

Example 1: Using the OnClientItemDataBound event.

<script type="text/javascript">
    function sliderItemDataBound(sender, eventArgs) {
        eventArgs.get_sliderItem().text += " RoomID: " + eventArgs.get_dataItem().RoomID;
<telerik:RadClientDataSource runat="server" ID="RadClientDataSource1" PageSize="10" AllowPaging="true">
        <WebServiceDataSourceSettings BaseUrl="">
            <Select Url="Meetings" DataType="JSONP" />
<telerik:RadSlider RenderMode="Lightweight" runat="server" ID="RadSlider1" Width="800px" Height="150px" ItemType="Item" 
    ClientDataSourceID="RadClientDataSource1" OnClientItemDataBound="sliderItemDataBound">
    <ItemBinding TextField="Title" ToolTipField="Description" ValueField="Date"></ItemBinding>
<span id="Span2"></span>

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