How to DFCLib library in VB.Net

I want to convert object to Idfdocument in VB.NET

Id = m_DfClientX.getId(itemID) 'itemID string If (Id IsNot Nothing) Then sysObj = CType(session.getObject(Id), IDfSysObject) nesne = sysObj.getContent()

Dim doc As IDfDocument = CType(nesne, IDfDocument) ***exceptionnn

Exception is:'System._Object' türündeki COM nesnesi 'DFCLib.IDFDocument' arabirim türüne atanamadı. '{EFAC2D68-175B-9927-006097C27C31}' IID'sine sahip arabirim için COM bileşenindeki QueryInterface çağrısı aşağıdaki hatayla başarısız olduğundan bu işlem başarısız oldu. Böyle bir arabirim desteklenmiyor. (HRESULT özel durum döndürdü:0x80004002 (E_NOININTERFACE)).

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Comments

michelle8

Hello Demet,

Many apologies for the late response; you have posted your question in the ECN Help space.

I will move it to Documentum space where it is likely to generate some great responses.

aflowers001

if nesne is the result of getContent then it is, in Java terms, a ByteArrayInputStream hence it cannot ever be converted to an IDfDocument instance. This is all in the JavaDoc.

Is IDfDocument is a subclass/interface of IDfSysObject and as the getObject() call can return an IDfDocument try

Id = m_DfClientX.getId(itemID) 'itemID string

If (Id IsNot Nothing) Then sysObj = CType(session.getObject(Id), IDfDocument)

Dim doc As IDfDocument = CType(sysObj, IDfDocument)