any unique property for differentiate inventor files?

[Anonymous]

hey, devs

do Autodesk Inventor files especially .iam assembly files have a unique property (something like an internal name, ID or Guid) that can differentiate them from each other even when they have the same name?

I am thinking of their full path by the time, but i am curious that is there any other way or not?

actually, i have an add-in that i need to store some data in it while running, that these data are related to each document naturally, i would like to differentiate these data for each document using a unique value.

[JamieVJohnson2 · Accepted solution]

Document has RevisionID, and DatabaseRevisionID, both create GUID, which means they are unique values.

[pball · Accepted solution]

Like the previous poster said yes there are unique ids per file. Below is a thread that discusses this topic further and has some examples.

https://forums.autodesk.com/t5/inventor-forum/need-to-catch-my-students-cheating/td-p/5587748/page/2

The other option could be to use secret iProperties, this would allow you to store hidden info inside a file. I personally haven't used them but they are apparently only accessible from the API. Below is what I saved from a post years ago.

Dim secretPropSet As Inventor.PropertySet = mDocument.PropertySets.Add("Secret Property Set")
Dim secretProp As Inventor.Property = secretPropSet.Add("ABC-XYZ", "Secret Property")

[Anonymous]

thank you @pball 

that was a pretty helpful way of storing some data in the file itself, 

that was very interesting and answered a lot of my questions in mind.