Valued Mentor
Posts: 370
Registered: ‎01-27-2010
Message 1 of 4 (282 Views)
Accepted Solution

How to check BlockReference

282 Views, 3 Replies
01-03-2013 03:54 AM

HI all.

So i have 3 file DWG :

3.dwg : is a plan 'archi'
2.dwg is a plan with only décoration.
1. dwg is a plan with only the water.

i have this structure in my file (1.dwg) :

---> 2..dwg
---------> 3.dwg   (this file is a Xref of 2.dwg)


--> is the blockRefecence (XRef).

my code :

        Dim CollXref As New ObjectIdCollection

        Dim mydb As Database = Application.DocumentManager.MdiActiveDocument.Database 
        Dim myTrans As Transaction = mydb.TransactionManager.StartTransaction
        Dim doc As Document = Application.DocumentManager.MdiActiveDocument
        Dim DocLock As DocumentLock = doc.LockDocument

            Dim BlocTable As BlockTable = CType(myTrans.GetObject(mydb.BlockTableId, OpenMode.ForRead), BlockTable)
            For Each btid As ObjectId In BlocTable
                Dim DefBloc As BlockTableRecord = CType(myTrans.GetObject(btid, OpenMode.ForWrite), BlockTableRecord)
                If DefBloc.IsFromExternalReference = True Then
                    If DefBloc.IsResolved = False Then
                    End If
                End If
        Catch ex As Exception
            MsgBox(ex.Message, vbOKOnly & vbCritical, "ee")
        End Try
        DocLock = Nothing


So i don't want to add Id of a Xref From a Xref. (In my example i want only ObjectId of the 2.dwg not 3.dwg if i launch this code on 1.dwg.


How i can do that ?

Posts: 5
Registered: ‎02-20-2009
Message 2 of 4 (245 Views)

Re: How to check BlockReference

01-04-2013 02:14 PM in reply to: AubelecBE

You can use the XRef Graph to determine if an XRef is nested. Here is a blog post that shows how to use the XRefGraph type:






Valued Mentor
Posts: 370
Registered: ‎01-27-2010
Message 3 of 4 (226 Views)

Re: How to check BlockReference

01-05-2013 02:56 AM in reply to: gopinatht

Thx i have to see that

Valued Mentor
Posts: 370
Registered: ‎01-27-2010
Message 4 of 4 (201 Views)

Re: How to check BlockReference

01-06-2013 02:43 AM in reply to: AubelecBE

Here my code final :


                Dim LockDoc As DocumentLock = doc.LockDocument
                Dim OkErr as boolean = false
                Dim CollXRef As New ObjectIdCollection
                    Dim xg As XrefGraph = db.GetHostDwgXrefGraph(True)
                    Dim root As GraphNode = xg.RootNode

                    Using tr As Transaction = db.TransactionManager.StartTransaction

                        For o = 0 To root.NumOut - 1 Step 1
                            Dim child As XrefGraphNode = CType(root.Out(o), XrefGraphNode)

                            If child.XrefStatus = XrefStatus.Resolved Then
                                Dim bl As BlockTableRecord = tr.GetObject(child.BlockTableRecordId, OpenMode.ForRead)

                                'ed.WriteMessage(vbCrLf & i_indent + child.Database.Filename)

                                ' Name of the Xref (found name)

                                ' You can find the original path too:
                                If bl.IsFromExternalReference = True Then
                                    ed.WriteMessage(vbCrLf & "Xref path name: " + bl.PathName)
                                    Exit For
                                End If
                            End If

                        'trouvé un xref --> Adding

                        If CollXRef.Count > 0 Then
                                doc.Database.BindXrefs(CollXRef, False)

                            Catch ex As Exception
                                okErr = True
                                MsgBox("Erreur lors de la liaison d'un Xref" & vbCrLf & "--> Essayer de lier le premier niveau", _
                                              vbOKOnly & vbCritical, _
                                              "Erreur Système")
                            End Try
                        End If
                    End Using
                    ed.WriteMessage(vbCrLf & "-> " & CollXRef.Count.ToString)
                Loop Until (CollXRef.Count = 0) Or (okErr = True)

                LockDoc = Nothing

 If check only one XRef. it is for the binf of only one XREF.

I have big file to bing and if i bing all in one troke, autocad crack for a 'Out of mémory'


I can't check it now (i am not on my work). So i don't know if i have resolve this case of out of memory.





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