I'm trying to set up a 1:Many relationship between items in a parent list.
In the EditForm for the parent item, I've inserted a XsltListViewWebPart for the child list, and set up filtering on the parent ID. This is working well so far, however my issue is with adding a new item to child list. I would like the parent ID to be passed into it the new child item.
I'm new to this, so I could be on the wrong track altogether too.