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The OnClientShowing client-side event handler is called before the RadAjaxLoadingPanel is displayed.

Two parameters are passed to the event handler with the following methods:

  • sender - the instance of the RadAjaxLoadingPanel client-side object.

  • eventArgs has the following methods:

  • set_cancelNativeDisplay() lets you cancel the default behaviour of theRadAjaxLoadingPanel. Calling set_cancelNativeDisplay(true) prevents the default behaviour and allows you to implement custom show animation for the loading panel.

  • get_loadingElement() gets the DOM element of the RadAjaxLoadingPanel.

  • get_updatedElement() gets the DOM element of the ajax updated control, over which the loading panel is about to be displayed.

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