How to tell if files are missing when opening an assembly?

[LuminescentLoom]

If I open an assembly with a missing file in the GUI, it shows this dialog:



But if I use OpenFileEx(), it silently ignores the missing files. Is there a way to know that it happened? I see IADDesignSession.HasErrors but it's just a boolean and I don't know what errors it's going to be set by.

 

[stepalibre]

You can use ConstituentFilePaths to get the constituents and then check if the file paths exist or not. This can be a slow process for large assemblies.

 

[LuminescentLoom]

Thanks Stephen. I see it does include the files that are missing. I might compare the filenames from ConstituentFilePaths to the ones in the occurrences to identify missing ones.