topic Betreff: Issue of copying entities to other layer in .NET Forum

Issue of copying entities to other layer

MarkJamesRogolino — Mon, 15 Aug 2022 09:08:08 GMT

Hello everyone.

Now I am making an AutoCad Plugin copies all layers. But I made only copying layers module.

How can I make all the entities are copied to duplicated layers(e.g. New_layername)?

Can someone help me? Thanks in after.

Betreff: Issue of copying entities to other layer

Alfred.NESWADBA — Mon, 15 Aug 2022 09:20:36 GMT

Hi,

one way going through each entity (if you really want to copy each single entity and not just content of modelspace):

go through each BlockTableRecord in BlockTable,
each BlockTableRecord has Entities,
copy the entity,
assign the copied entity the layer you like to have
add this copied item to the BlockTableRecord.

Or do you have another question or where is the point you can't continue?

- alfred -

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Mon, 15 Aug 2022 09:28:44 GMT

Now I am making it with c# .net.

Do you have some similar sample code?

Betreff: Issue of copying entities to other layer

Alfred.NESWADBA — Mon, 15 Aug 2022 09:31:21 GMT

Hi,

there exist so many help already in www about how to copy objects using AutoCAD with .NET like this:

>>>click<<<

And no, I don't have such a code ready, so please start with your part and show then the code with the question where you can't continue.

- alfred -

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Mon, 15 Aug 2022 09:34:43 GMT

okay, I will try, Thanks.

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Mon, 15 Aug 2022 09:43:28 GMT

my issue is copying between layers in one drawing.

but I can not find such help url.

Betreff: Issue of copying entities to other layer

Alfred.NESWADBA — Mon, 15 Aug 2022 09:58:38 GMT

Hi,

>> my issue is copying between layers in one drawing.

You first need to copy an entity ... as shown >>>here<<<

Then, before adding the object back to the BlockTableRecord use

Ent.Layer = "0" ... or the layername you want to assign it to (the layer has to exist, better/faster would be to assign it the LayerID)

- alfred -

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Tue, 16 Aug 2022 00:28:49 GMT

Hi, Thanks for your help. but there are some errors.

My code is as followings.

Document acDoc = Application.DocumentManager.MdiActiveDocument;
Database acCurDb = acDoc.Database;
var objectIds = new ObjectIdCollection();
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
BlockTable acBlkTbl;
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,
OpenMode.ForRead) as BlockTable;
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace],
OpenMode.ForWrite) as BlockTableRecord;
var modelspace = (BlockTableRecord)acTrans.GetObject(
acBlkTbl[BlockTableRecord.ModelSpace], OpenMode.ForRead);
foreach (ObjectId id in modelspace)
{
objectIds.Add(id);
Entity ent = (Entity)acTrans.GetObject(id, OpenMode.ForRead);
string lyrnm = ent.Layer.ToString();
string newlyrNm = convertedLyrNm(lyrnm);
Entity entcpy = ent.Clone() as Entity;
entcpy.Layer = newlyrNm;
acBlkTblRec.AppendEntity(entcpy);
acTrans.AddNewlyCreatedDBObject(entcpy, true);
}
acTrans.Commit();
}

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Tue, 16 Aug 2022 02:01:57 GMT

I have to paste copied object to same position with source object. Thanks.

Betreff: Issue of copying entities to other layer

Alfred.NESWADBA — Tue, 16 Aug 2022 06:13:20 GMT

Hi,

I don't see the code of "convertedLyrNm" used in this line:

string newlyrNm = convertedLyrNm(lyrnm);

For the crash ... please show the line where you code crashes during debug.

- alfred -

Betreff: Issue of copying entities to other layer

_gile — Tue, 16 Aug 2022 11:36:10 GMT

Hi,

The RXObject.Clone() method does not deep clone the entity (i.e. does not copy the entity xdata and extension dictionary), you should use DeepCloneObjects instead.

Assuming convertedLayerNames is a Dictionary<string, string> where each pair key is the old layer name and each pair value is the corresponding new layer name, assuming these new layers already exist in the drawing LayerTable, you can do something laike this:

public void CopyModelSpaceEntitiesToNewLayer() { var doc = Application.DocumentManager.MdiActiveDocument; var db = doc.Database; using (var tr = db.TransactionManager.StartTransaction()) { // Deep clone all the entities in model space var modelSpaceId = SymbolUtilityServices.GetBlockModelSpaceId(db); var modelSpace = (BlockTableRecord)tr.GetObject(modelSpaceId, OpenMode.ForWrite); var ids = new ObjectIdCollection(); foreach (ObjectId id in modelSpace) { ids.Add(id); } var mapping = new IdMapping(); db.DeepCloneObjects(ids, modelSpaceId, mapping, false); // change the layer of cloned entities foreach (IdPair pair in mapping) { if (pair.IsCloned && pair.IsPrimary) { var entity = (Entity)tr.GetObject(pair.Value, OpenMode.ForWrite); entity.Layer = convertedLayerNames[entity.Layer]; } } tr.Commit(); } }

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Tue, 16 Aug 2022 08:10:00 GMT

I think acTrans.Commit(); occurs an error.

I will expect good result.

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Tue, 16 Aug 2022 09:02:41 GMT

convertedLyrNm() function is only for getting layername to be copied.

I think acTrans.Commit(); occurs an error.

I will expect good result.

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Tue, 16 Aug 2022 09:05:04 GMT

Thanks for your great help.
There was no error, but some entities are not pasted.
Anyway this will be allowable. Thanks again.

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Tue, 16 Aug 2022 09:07:56 GMT

PS. This function successfully copied about a little number of entities that I draw.
but many entities in opened document are not copied.

Betreff: Issue of copying entities to other layer

_gile — Tue, 16 Aug 2022 11:47:05 GMT

Take care with copy/paste of code snippets.

By writing all the code yourself, you would certainly avoid this type of mistake:

BlockTableRecord acBlkTblRec; acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord; var modelspace = (BlockTableRecord)acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace], OpenMode.ForRead);

You open the model space table record twice, one time for write, the other time for read...

Betreff: Issue of copying entities to other layer

_gile — Tue, 16 Aug 2022 11:49:19 GMT

@MarkJamesRogolino a écrit :
PS. This function successfully copied about a little number of entities that I draw.
but many entities in opened document are not copied.

Can you elaborate about which kind of entities and/or attach a drawing sample containing such entities.

Betreff: Issue of copying entities to other layer

MarkJamesRogolino — Tue, 16 Aug 2022 12:27:32 GMT

I can not copy areatable layer with your code.

Re: Issue of copying entities to other layer

_gile — Tue, 16 Aug 2022 13:33:00 GMT

I cannot reproduce what you describe.

From the tests I did, all the entities on the layer "_AREATABLE" are also copied.

Try with this new code which moves the cloned entities of 700 units aong X axis.

public static void CopyModelSpaceEntitiesToNewLayer() { var doc = Application.DocumentManager.MdiActiveDocument; var db = doc.Database; using (var tr = db.TransactionManager.StartTransaction()) { // Deep clone all model space entities var modelSpaceId = SymbolUtilityServices.GetBlockModelSpaceId(db); var modelSpace = (BlockTableRecord)tr.GetObject(modelSpaceId, OpenMode.ForWrite); var ids = new ObjectIdCollection(); foreach (ObjectId id in modelSpace) { ids.Add(id); } var mapping = new IdMapping(); db.DeepCloneObjects(ids, modelSpaceId, mapping, false); // change the layer of cloned entities foreach (IdPair pair in mapping) { if (pair.IsCloned && pair.IsPrimary) { var entity = (Entity)tr.GetObject(pair.Value, OpenMode.ForWrite); entity.Layer = convertedLayerNames[entity.Layer]; // move the cloned entity of 700 units along X axis entity.TransformBy(Matrix3d.Displacement(Vector3d.XAxis * 700.0)); } } tr.Commit(); } }

PS: Opening your file with the RECOVER command finds 3 errors.

Re: Issue of copying entities to other layer

MarkJamesRogolino — Wed, 17 Aug 2022 08:50:35 GMT

Thanks, gile.

Followings are my code.

// change the layer of cloned entities
foreach (IdPair pair in mapping)
{
if (pair.IsCloned && pair.IsPrimary)
{
var entity = (Entity)tr.GetObject(pair.Value, OpenMode.ForWrite);
entity.Layer = convertedLyrNm(entity.Layer);
}
}
tr.Commit();
}
}

Here I can not copy _AreaTable layer.