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The client-side Load event is raised when the RadProgressBar client-side object is fully loaded (the full API of the control is available at this point). This article discusses the objects of the control's Load event and shows an example of how to retrieve properties when the event occurs (Example 1).

To handle this event, simply write a JavaScript function that can be called when the event occurs. Then assign the name of this function as the value of the the OnLoad property in the control's ClientEvents subtag.

The client-side OnLoad event handler receives one argument:

  1. Sender—the RadProgressBar object that fired the event.

Example 1: Handle the RadProgressBar's client-side Load event.

<telerik:RadProgressBar RenderMode="Lightweight" runat="server" ID="RadProgressBar2" Value="30">
    <ClientEvents OnLoad="onLoad" />

    function onLoad(sender) {
        alert("A ProgressBar with ID " + sender.get_id() + " has been loaded. Its value is " + sender.get_value() + ".");

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