My XamDataGrid is bound to a dataset that has multiple parent-child tables 3 levels deep + 1. That +1 table is actually the root table which I bring up invisible and automatically expanded (this is done so the user can have multiple "visual" roots that all have table headers). When my records are presented I encounter the following issues:

1) Depending on what's expanded in the hierarchy, I often cannot scroll all the way to the bottom of the content using the mouse wheel. Most frequently getting me to last record - 1.

2) I CAN use the downward scroll button to get all the way down, but sometimes there is resistance and it takes several clicks before the scroll takes.

3) If a something in an expanded hierarchy is collapsed it might eliminate the vertical scrollbar (which appears to be part of a known bug). That of course means the user cannot scroll unless he starts clicking around until the scrollbar re-appear.

The end result is a horrific user experience and I want to correct that as soon as possible.

Thanks.