Strange behaviour - BrowserPane.GetBrowserNodeFromObject

[amitabhVA4SD]

Hello Everyone,

I am using the BrowserPane.GetBrowserNodeFromObject Inventor API (Inventor 2020.4) to read the Browser Nodes/Tree Nodes from the Inventor Browser Pane. I am using this API to read the node path all the way from the tree root node (i.e AAA/BBBB/CCCC/...). This path is then used to determine if there are any Parts inside specific Browser Folders (Like Standards, Reference, etc) that I should ignore while collecting all the Parts in the Assembly. I have to do this round-about way since Inventor does not have any direct API that provides the Browser Folder Name which is Parent to the Part. Strangely this API is failing the first time and working without any code changes every subsequent time.

Has anyone faced a similar issue?

Thanks,

Amitabh

[bradeneuropeArthur]

It will help if you share the code here.

[WCrihfield]

Hi @amitabhVA4SD.  This does sound a little familiar, but can't recall anything specific.  A couple questions to ponder though.  Is it possible that the assembly is loaded in 'Express Mode', instead of 'Full', and the path of that node includes something that was not initially loaded yet?  If that was the case, the initial access may load it into memory, then subsequent calls are finding it.  Or is it possible that something in the node's path is suppressed?  Maybe if that is the case, something similar is happening...a reference gets loaded to support your access call the first time, but not available for that first call, then available for follow up calls.  Just a couple of thoughts to explore.

[amitabhVA4SD]

Thanks for the insight, @WCrihfield. The explanation is starting to  make sense but we are loading the Assembly Fully using Inventor Command Manager with code and also ignoring any suppressed or invisible parts in the assembly while collecting the occurrences from the Inventor Tree. Then we are feeding these occurrences to the API to read the path. The reason we have to load the assembly fully is to do with working with the Topology, Geometry and Bounding Box as part of the bigger problem statement.
I will share some sample code as well (for reference)

Thanks,

Amitabh

[amitabhVA4SD]

sure @bradeneuropeArthur . We are getting the issue while working with the very first occurrence in the tree.

 public static class StaticVariables
    {
        private static BrowserPane _browserPane;
        public static Inventor.BrowserPane BrowserPane =>
            _browserPane ?? (_browserPane =
                (VctApplication.InventorApp.ActiveDocument as Inventor.AssemblyDocument).BrowserPanes[
                    "AmBrowserArrangement"]);

        public static string GetPath(ComponentOccurrence occurrence)
        {
            if (occurrence.Name.ToUpper().Contains("WELDBEAD")) return string.Empty;
            return BrowserPane.GetBrowserNodeFromObject(occurrence).FullPath;
        }
    }

Thanks,

Amitabh

[WCrihfield]

I do not profess to be that fluent in C#, but that code seems fairly simple.  Now I am wandering if maybe your overall project code is somehow simply not waiting for the assembly get fully loaded before proceeding to attempt this 'get' request from it that first time.