Hi,
I use dll is DFCLib but is it true?

I try;
Code:
Dim sysObj As IDfSysObject
Dim perObj As IDfPersistentObject
Dim session As IDfSession
Dim document As IDfDocument
Dim Id As IDfId
Dim nesne As Object = Nothing
Code:
Dim strSQL As String = " dm_document where r_object_id='" & itemID.ToString() & "'"
sysObj = Nothing
Id = m_DfClientX.getId(itemID)
...