I have a task to select a part/Subassembly that is in another assembly. For example Assembly3 Containing assembly2, and assembly2 contains assembly1 and assembly1 contains Part1.

Here are few methods that I have tried, please let me know if there is something wrong in implementing these methods and also any new methods that you know.

Things tried:

1: "Select" method, this method is called by IComponent2 object, comming from ImodeldocExtension, by doing GetCorresponding, that returns a Idispatch object and by doing Queryinterface for Icompenent2 obj to call select.

2:"select" method, this method is again called by Icomponent2 object, this time brought by Ifeaturebyname/featurebyname by giving the name of the part/subassemble that we need to select, and doing GetSpecificfeature , that give Idispatch object with which we queryinterface to get IComponent object to call Select.   

3:"selectbyId2" method , but I am not sure if Iam passing the correct input parameters because there is partial selection taking place.

here is some sample code that explains above mothod.

Things went wrong

1: In method 1: GetCorresponding doesnot return a Idispatch Object that can give IComponent2 obj on queryInterfacing

             CComQIPtr parCompDisp(parComp);

          CComPtr newCompDisp;

          HRESULT hr = iModext->GetCorresponding(parCompDisp, &newCompDisp); newCompDisp is Null

          CComQIPtr pNewComp(newCompDisp);

          VARIANT_BOOL retx;

          pNewComp->Select(VARIANT_FALSE, &retx);

2: In method 2: Ifeaturebyname/featurebyname donot return pCompFeature that is a IFeature object.

   CComPtr pCompFeature;

                    hr = pAssyDoc->IFeatureByName(bName, &pCompFeature);   IF in topmost level, pCompFeature is NULL

                    CComPtr parComp;

                    hr = pAssyDoc->GetEditTargetComponent(&parComp);

                    hr = parComp->FeatureByName(bName, &pCompFeature);  If not in toplevel or is in subassembly , pCompFeature is NULL

                    if(FAILED(hr) || !pCompFeature)

                              return EditorError;

          CComPtr pCompDispFromFeature;

          hr = pCompFeature->GetSpecificFeature2(&pCompDispFromFeature);

          CComQIPtr pCompReal(pCompDispFromFeature);

          VARIANT_BOOL retx;

          hr = pCompReal->Select(VARIANT_FALSE, &retx);

3: in method 3: I have tried passing fisrt parameter as string i.e name of part "Part1"  and the full string like "Part1-1@assembly1-1@assembly2-1@Assembly3"   , also I have tried passing the typename as "COMPONENT" , "FEATURE" etc etc. still there is partial slection and not full selection that I need