References the event arguments passed to the event handler when the event occurs.
public object EventArgs {get; set;}
EventArgs is only available to event handlers for Element Events.
This reference returns null for Application Events,
Page Events, and for script bindings.
This example shows how to retrieve the mouse coordinates passed as arguments to the OnMouseMove event.
For the OnMouseMove event,
EventArgs is of type MouseEventArgs,
which exposes the GetPosition method.
var relativeToElement = EventArgs.GetPosition(Element);
var relativeToPage = EventArgs.GetPosition(Page);
var c = string.Format("Mouse coordinates: \n• Element: {0:F3}\n• Page: {1:F3}",
relativeToElement, relativeToPage);
SETP("lblMouseCoordinates@Input", c);