Hi, I need to represent hierarchical data in my XamGrid in a particular format, where expandable rows have a "+/-" next to them. To accomplish this, I overrode the TextColumn class and its TextColumnContentProvider to add in the +/- behavior. It works, but when the window is grown, for some reason the cells that were not visible before don't display their data. What can I do to fix this?

I tried to attach a sample solution illustrating the problem, but the forum kept giving me "500 Server Error" errors (I guess you guys are having problems with the new site). I don't have access to filesharing websites on this PC, but if you email me then I can reply with the solution.

Thanks!