Our version is  Version=8.3.20083.1009, Infragistics35.WebUI.WebCalendarView.v8.3.

We want to upgrade to newest Infragistics, but it will need more work, so we decide to postpone upgrading until budget is passed.

Thanks for replying,   but in IE8 normal model,  rendering appointment very slower,  under IE7, IE9, works well. when IE8 release, we have to let users use IE8 compatibility. 

According to your quick reply, we may upgrade this component. because in that time, no one answers any question in this forum. our manager almost kick me out, due to I suggest to use this component.

We've spent 2 months on changing webschedule for browsers compatibility,  webcalender' issue is the last step.   because it may be IE9's bug,  it works well other IE model, Chrome, Safari and Firefox.  if no way to solve this issue,  we may have to upgrade. 

Thanks

how to show only dropwdowns with out imag in webcalenderview

override this function, it works for IE9

function ig_cancelEvent(e, type) {
if (e == null) if ((e = window.event) == null) return;
if (type && e.type != type) return;
// if (e.stopPropagation != null) e.stopPropagation();
// if (e.preventDefault != null) e.preventDefault();
e.cancelBubble = true;
e.returnValue = false;
}