Quote Originally Posted by cass84 View Post
That wasn't exactly what I was looking for but I figured out the expression for a new column in the datatable that worked for me by joining the two columns together but it won't allow me to add the unique validation...
Well, then you have to tell us exactly what you're looking for, I guess
And BTW, you can't guarantee by combining 2 columns you will get a unique value, so you have to have some way to hold all the combined values you have and check each new combined value against that list (as I showed in the last post).