The datasource for my Grid is a List. If I use code to update some values for the items in my list, the grid summaries aren't being updated. How do I force the grid summary row to recalculate? Thanks
A List is not a very robust data source. It doesn't send a lot of notifications tha amore robust data source would. I recommend using a BindingList instead.
Of, if you want to force the grid to update manually, you can call the grid.Rows.Refresh method.