I'll give this a shot. Thanks for your reply. My object is a pretty complex one, derived from a database, and with almost 3000 "records"/"rows". I would LOVE to be able to post code, but the product is VERY proprietary, and I'd likely be fired at the very least.

I have an extremely complex object being passed to my code. I do not, at compile time (or while I am programming the code, for that matter) know what the object contains, other than a few properties, and that it is an IQueryable object...

I have to manipulate the data contained in the object by grouping on as many as 22 different datapoints (if they exist in the incoming object, and are specified in an incoming string parameter accompanying...