It bugs me that I'm using the text name rather than the actual column variable. I know, in my example scenario, that the column variable is actually "gridViewTextBoxColumn8" (which could be a better name, I know).
Other than comparing on the name variables, which is a little better:
...is there a "good" way to do this? When given a GridViewCellInfo item, what's the type-safe and typo-safe way to compare the column?