Using CONCATENATE in the validation source field to refer to a named table
问题 My question originates from a task I have been given that has had me stumped. I have been given a large tree structure that I need to turn into a series of dependant dropdown (or something similar). The end goal is to form a means of user input in an excel spread sheet. I am using Excel 2010 and as such would prefer to avoid VBA. So far I've managed to cut down the number of lists by using a drop down for the first two generations in the tree and then two successive vlookups. The next