Are you sure that you are using Magick.NET? There is no Identify method in the MagickImage class.
EDIT: Sorry, I did not see you posted the Interop syntax. You can do it like this:
But I think this deserves a special property. I will add a new property called HasClippingPath in the next release.
EDIT: Sorry, I did not see you posted the Interop syntax. You can do it like this:
using (MagickImage image = new MagickImage(sourceFilePath)) { string clipPathInfo = image.GetAttribute("8BIM:1999,2998:#1"); }