Subtype Sheet Metal file changed in Inventor 2014

[w.pepping]

Since I create sheet metal files in Inventor 2014, the subtype of this parts is not always the same. Migrated files from an earlier version have the right ID.

So my add-in to detect sheet metal parts fails.

I use the code: 

If IV.ActiveEditDocument.SubType = "{9C464203-9BAE-11D3-8BAD-0060B0CE6BB4}" Then

What can it be?

[Anonymous · Accepted solution]

Try this code.

If IV.ActiveEditDocument.DocumentSubType.DocumentSubTypeID= "{9C464203-9BAE-11D3-8BAD-0060B0CE6BB4}" Then

[ekinsb · Accepted solution]

The workaround suggested in the last past is a good one and should work.  This problem was discovered a few months ago and one of the developers spent quite a while investigating it without being able to determine the actual cause.  At this point we believe there may be a problem with the underlying Microsoft code that's used when the program runs.  I believe it's also only a problem if your program is referencing the Inventor 2013 interop.  However, we would expect it to work in that case too.

[rjay75]

I have also seen this behavior in parts created in Inventor 2013 and 2011 as well. It seemed to be random with the parts showing this behavior. Using the alternate syntax to get the subtype id does correct the issue.

I've seen this issue in all the post IV 2013 APIs.