I have attached the full error message that a test user and I receive randomly while using the grid. Mostly the issue occurs while grouping/ungrouping columns but for no specific columns/data/etc. I know the information is relatively sparse but wanted to see if anyone has seen this and could know of a possible cause. I'll try to put together a sample application and see if I can replicate it, but I doubt I would be able to replicate it outside of this app because it just started occurring around last week.
This looks like an issue that was fixed a while ago. Do you have the latest hot fix?
Currently I've got 8.1.20081.2046, is this the latest?
Yes, I beleive that's the latest. In that case, you should Submit an incident to Infragistics Developer Support and, if possible, include a small sample project demonstrating the exception so they can check it out.
I fixed this error by using the BeforeSortChange and AfterSortChange events. In BeforeSortChange I suspend calculations and in AfterSortChange I resume calculations on the UltraCalcManager. Besides eliminating this error it also greatly improves performance.
Yes, I know but it was only happening on my development machine, randomly at that, and never on user's machines. It will be really hard to duplicate this in a sample application given the work I need to complete and I understand that sample applications are very essential in diagnosing problems and correcting them. If I end up with some free time I will try to duplicate the issue.
That's great. :)
But you should still report it to Infragistics. You shouldn't HAVE to suspend and resume the calculations. :)