I'm trying to retrieve a document by its "_dlc_DocId" and I tried the suggestion at CSOM get document by ID but I end up with nothing (my "items" object is empty and I am sure my _dlc_DocId is correct).
In my case I have a root folder, and document sets (folders) within that folder. The files I'm looking for are within the document sets (sub-folders). Is there a way to retrieve a document by Id using a url (library path + ID)? Just looking for a more direct way other than brute force (iterating over each sub-folder, loading the files for each folder, and then iterating over the files for an ID match).