topic Re: AttachXref to DWG not opened in AutoCAD in .NET Forum

AttachXref to DWG not opened in AutoCAD

Anonymous — Fri, 29 Jan 2010 19:05:23 GMT

I have a project that is requiring a dwg to be copied, along with the external references. On this new dwg file in the separate drive, I need to change the external references, to the newly created external reference files on the separate drive.

I save the currently opened dwg file and all external references to a separate drive. That part is done.

Next, my approach was to get the new dwg file on the separate drive, delete all external references, then reattach the new external references on the separate drive.

I have been able to get the dwg file, delete the external references. But now I'm stuck.

I can't seem to figure out a way of attaching an external reference to a dwg file that isn't opened in AutoCAD. Is it possible? Do I need RealDWG for this?

I'm currently using AutoCAD 2010 and ObjectARX 2010 .Net

Any help is greatly appreciated

Thanks
Jerri

Re: AttachXref to DWG not opened in AutoCAD

Anonymous — Fri, 29 Jan 2010 19:52:53 GMT

As long as the xrefs are located on the same drive as the master and you
recreate the same folder structure on your copy location you shouldn't need
to do anything if using "relative path" when attaching the xrefs to the master.

If not using "relative path" you have some work ahead.

Sorry I can't be much help here but I know you'll need to detect the insertion
point, scale, overlay or attachment, and orientation of each xref in the
master then recreate it on the copied master when you reattach the xref.

> I have a project that is requiring a dwg to be copied, along with the
> external references. On this new dwg file in the separate drive, I
> need to change the external references, to the newly created external
> reference files on the separate drive.
>
> I save the currently opened dwg file and all external references to a
> separate drive. That part is done.
>
> Next, my approach was to get the new dwg file on the separate drive,
> delete all external references, then reattach the new external
> references on the separate drive.
>
> I have been able to get the dwg file, delete the external references.
> But now I'm stuck.
>
> I can't seem to figure out a way of attaching an external reference to
> a dwg file that isn't opened in AutoCAD. Is it possible? Do I need
> RealDWG for this?
>
> I'm currently using AutoCAD 2010 and ObjectARX 2010 .Net
>
> Any help is greatly appreciated
>
> Thanks
> Jerri

Re: AttachXref to DWG not opened in AutoCAD

Anonymous — Sat, 30 Jan 2010 03:44:31 GMT

Can you just change the path of the existing XREF?

Re: AttachXref to DWG not opened in AutoCAD

Anonymous — Sat, 30 Jan 2010 12:34:42 GMT

Have you tried just setting the PathName property of the
XRef's BlockTableRecord to the new path, or are you
taking the scenic route for another reason?

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wrote in message news:6327128@discussion.autodesk.com...
I have a project that is requiring a dwg to be copied, along with the external
references. On this new dwg file in the separate drive, I need to change the
external references, to the newly created external reference files on the
separate drive.

I save the currently opened dwg file and all external references to a separate
drive. That part is done.

Next, my approach was to get the new dwg file on the separate drive, delete all
external references, then reattach the new external references on the separate
drive.

I have been able to get the dwg file, delete the external references. But now
I'm stuck.

I can't seem to figure out a way of attaching an external reference to a dwg
file that isn't opened in AutoCAD. Is it possible? Do I need RealDWG for this?

I'm currently using AutoCAD 2010 and ObjectARX 2010 .Net

Any help is greatly appreciated

Thanks
Jerri

Re: AttachXref to DWG not opened in AutoCAD

Anonymous — Mon, 01 Feb 2010 13:49:50 GMT

That did it! Sorry for the stupid question everyone. Thanks for all of your help getting me on the right route 🙂

Thanks
Jerri

Re: AttachXref to DWG not opened in AutoCAD

Anonymous — Tue, 02 Feb 2010 14:26:27 GMT

I'm now changing the path for an xref. However, the new filename/path for the xref does not have file extension, it is stripped by the other product I'm integrating with. When I open the drawing, it's says that the xrefs weren't found, and I think this is because they don't have the "dwg" extension. Am I correct? If so, Is there a way around this? Edited by: j_degner on Feb 2, 2010 9:36 AM

Re: AttachXref to DWG not opened in AutoCAD

Anonymous — Tue, 02 Feb 2010 14:28:21 GMT

Re: AttachXref to DWG not opened in AutoCAD

Anonymous — Tue, 02 Feb 2010 14:43:34 GMT

> {quote:title=j_degner wrote:}{quote}
> I have been able to get the dwg file, delete the external references. But now I'm stuck.

How did you do that? I'm stuck at that place...

Thx
Ontario

Re: AttachXref to DWG not opened in AutoCAD

Anonymous — Tue, 02 Feb 2010 15:06:38 GMT

I hope this helps.....

Dim newXDb As Database = New Database(False, True)
newXDb.ReadDwgFile(strfilepath, System.IO.FileShare.ReadWrite, False, "")
Dim xrefTr As Transaction = newXDb.TransactionManager.StartTransaction()
Using xrefTr
Dim bTable As BlockTable = xrefTr.GetObject(newXDb.BlockTableId, OpenMode.ForWrite)
Dim bRecord As BlockTableRecord = xrefTr.GetObject(bTable(BlockTableRecord.ModelSpace), OpenMode.ForWrite)
Dim iter As IEnumerator = bRecord.GetEnumerator
Dim i As Integer = 0
While iter.MoveNext
Dim id As ObjectId = iter.Current
Dim ent As Entity = CType(xrefTr.GetObject(id, OpenMode.ForWrite), Entity)
If (TypeOf ent Is BlockReference) Then
Dim bref As BlockReference = CType(xrefTr.GetObject(ent.ObjectId, OpenMode.ForWrite), BlockReference)
Dim blkRec As BlockTableRecord = CType(xrefTr.GetObject(bref.BlockTableRecord, OpenMode.ForRead), BlockTableRecord)

If blkRec.IsFromExternalReference Then
If bref.IsWriteEnabled = True Then
bref.Erase()
bref.Dispose()
i += 1
End If
ent.Dispose()

End If
End If
End While

MsgBox("Blocks deleted: " & i)
xrefTr.Commit()
newXDb.SaveAs(strfilepath, DwgVersion.Current)
xrefTr.Dispose()
newXDb.Dispose()
End Using

Re: AttachXref to DWG not opened in AutoCAD

Anonymous — Tue, 02 Feb 2010 15:19:33 GMT

Very great! Danke schoen!

Ontario