WebDataGrid1.Behaviors.VirtualScrolling.VirtualScrollingClientEvents.FormatToolTip = "WebDataGrid_FormatToolTip"WebDataGrid1.Behaviors.VirtualScrolling.VirtualScrollingClientEvents.FormatToolTip = "WebDataGrid_FormatToolTip";// The client event 'FormatToolTip' takes two parameters sender and e // sender is the object which is raising the event // e is the VirtualScrollingFormatToolTipEventArgs function WebDataGrid_FormatToolTip(sender, e) { //Sets the text in the tooltip to color red. e.set_text('<span style="color:red">' + e.get_text() + '</span>'); }