Valued Contributor
Posts: 95
Registered: ‎04-04-2012
Message 1 of 4 (896 Views)
Accepted Solution

Dealing with objects in LOCKED layer

896 Views, 3 Replies
05-01-2012 06:14 PM



I am trying to assign objects (only in UNLOCKED layers) with a new layer.

So basically, the user will select all the objects in the drawing.

After selecting (ex. press enter after window selecting), only objects in UNLOCKED layers will have a new layer.

Following is the code I am using...

But I keep getting eOnLockedLayer exception.

How should I handle this issue?


   using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())


                PromptSelectionOptions pSelOpts = new PromptSelectionOptions();

                pSelOpts.MessageForAdding = "Select all objects";

                PromptSelectionResult pSelRes = acDoc.Editor.GetSelection(pSelOpts);


                if (pSelRes.Status == PromptStatus.OK)


                    SelectionSet acSSet = pSelRes.Value;

                    foreach (SelectedObject acSSObj in acSSet)


                        if (acSSObj != null)


    // This line I am getting eOnLockedLayer exception

                            Entity acEnt = acTrans.GetObject(acSSObj.ObjectId, OpenMode.ForWrite) as Entity;


                            if (acEnt != null)


                                acEnt.Layer = "newLayer";

                                acEnt.ColorIndex = 20;                               







Valued Mentor
Posts: 263
Registered: ‎11-29-2008
Message 2 of 4 (890 Views)

Re: Dealing with objects in LOCKED layer

05-01-2012 07:52 PM in reply to: dynamicscope

Just stop them being selected


// Autodesk.AutoCAD.EditorInput.PromptSelectionOptions
public bool RejectObjectsOnLockedLayers

{ // < ..>






class keyThumper<T> : Lazy<T>;      another  Swamper

*Expert Elite*
Posts: 8,867
Registered: ‎06-29-2007
Message 3 of 4 (871 Views)

Re: Dealing with objects in LOCKED layer

05-01-2012 10:50 PM in reply to: dynamicscope



...or check the full syntax for TransAction.GetObject:

Public Overridable Function GetObject(id As Autodesk.AutoCAD.DatabaseServices.ObjectId, mode As Autodesk.AutoCAD.DatabaseServices.OpenMode, openErased As Boolean, forceOpenOnLockedLayer As Boolean) As Autodesk.AutoCAD.DatabaseServices.DBObject
     Member von Autodesk.AutoCAD.DatabaseServices.Transaction


- alfred -

Ingenieur Studio HOLLAUS ... www.hollaus.at
Distinguished Contributor
Posts: 136
Registered: ‎07-24-2009
Message 4 of 4 (810 Views)

Re: Dealing with objects in LOCKED layer

06-12-2012 08:16 AM in reply to: Alfred.NESWADBA

ForceOpenOnLockedLayer Parameter, 


That sure helped me. Thanks!:smileyhappy:

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