Hello guys,

I currently have the following in my code:

        SldWorks swApp;

        ModelDoc2 swModel;

        Modeler swModeler;

        Body2 swBody;

        Feature swFeat;

        PartDoc swPart= default(PartDoc);

        swModel = (ModelDoc2)swApp.ActiveDoc;

        swModeler = (Modeler)swApp.GetModeler();

        swBody = swModeler.CreateBodyFromBox3(dblData);   // dblData is an array[9] of double

        swPart = (PartDoc)swModel;  // <-- where the problem* occurs

        swFeat = swPart.CreateFeatureFromBody3(swBody, false , 0);

[quote]

InvalidCastException was unhandled by user code

Unable to cast COM object of type 'System.__ComObject' to interface type 'SolidWorks.Interop.sldworks.PartDoc'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{83A33D32-27C5-11CE-BFD4-00400513BB57}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).

[/quote]

I've been looking at some "examples" on the net and they do it exactly like this.  What could possibly be the issue here?

Thanks in advance for any help,

Rumen