Recently I created a series of maps displaying roads by county utilizing data driven pages. To display just the roads for the featured county I applied ???Clip to current data driven page extent??? and excluded the base county layer that generates the labels for all of the counties. When in layout view the labels for the county featured and surrounding counties are displayed; however, when I export the map to a .pdf the labels for the surrounding counties are not drawn but the focus county remains labeled. This also happens if the map is exported into a .jpg, .tif, etc. How do you think I could fix this problem and label the surrounding counties to give the featured county better spatial reference?
You can use it to display only items in a layer that "Match" the current index tile or only items that "Don't Match". I use the "Don't Match" option to label only adjacent map tiles though you can also use it to create masks and the like.
In my case I'm using a copy of my index grid for the adjacent labels so I already have the required "Page Name Field" in my dataset.
If the attribute you want to label does not reside in a copy of your index layer then I guess you would need to create a new dataset via a spatial join or some simliar operation to append the index layer's Page Name attribute to the label layer.