Hi
I need to show items in a gallery which are not present in another gallery and am not sure how to do it.
My scenarion is like this. A user goes to a NewForm of a listX. That form has a gallery control pointing to Title column of another list, ListA.
In the NewForm of ListX,user selects a few items from ListA gallery using checkbox and then submits the form. The selected items of ListA are submitted to another list,ListB (Region column) along with the ID (RefID column) of the item that got created in ListX .
In the editform of ListX,I have galleryB which filters ListB where ListB.RefID=ListX.ID ->This shows all items user had selected in NewForm.
I would like to show items in another gallery, galleryA which are not present in galleryB.
This would be something like Filter ListA where ListA.Title not in ListB.Region . It could also be Filter ListA where ListA.Title not in galleryB.Region.
I am not able to do this. For example, Filter(ListA,Title not in galleryB.AllItems.Region ->Does not work. Please help