I'm wondering if anyone else has run into this issue. I have a form with Infragistics CalenderInfo and WinDayView controls. The CalenderInfo is bound to a SF business binding source. The DayVew is set up to group multiple owners by date. With five owners and around 1200 appointments over a two month period the data is rendered is less than a second after the business object is filled. My problem starts when I set a logical day on CalendarInfo. Once set, the same data is taking a minute and a half to render. A check with ANTs profiler shows that it's tied up in the Infragistics code, for which I don't have the source. I've filed a support ticket with Infragistics but I thought Id check to see if any other SF user has run into this. I'm using NetAdvantage 2011 vol 2 on the latest version of SF.  

We have our own custom scheduling controls in PracticeStudio.  I haven't tried to use Infragistics' controls.  You're right, though sounds like they're trying to do some extra ciphering when you group them.  

HI Ben,

Thanks for the suggestion. Binding directly to the datatable cut the rendering time from 90 seconds down to 15 but that's still too slow for what I want to do. I need it to be 2 seconds max.
I'll see what Infragistics tech support has to say.

-Larry

For anyone that may use Infragistics WinSchedule in the future, it turns out that setting a logical workday on the CalendarInfo object is a relatively high overhead item. As Ben had suggested, binding directly to the BO data table improved performance but not to where I needed it. To resolve the issue I had to reduce the number of appointments that the object had to deal with by implementing lazy loading and only pulling in a subset of days at any given time. Otter than that, and the lack of really good documentation, the controls are working very well for me.