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  1. Hi, i need to read an external dwg and import only some entities. I use WblockCloneObjects, it work fine but i found a memory problem, the memory is not disposed autocad memory process significantly increases after every WblockCloneObjects. Where is the problem? Thank you very much. [CommandMethod("TestClone", CommandFlags.Transparent)] public void TestClone() { // repeated 20 times to highlight the memory consumption for (int i = 0; i < 20; i++) { ObjectIdCollection filteredIds = new ObjectIdCollection(); Database targetDb = ACAP.Application.DocumentManager.MdiActiveDocument​.Database; using (Transaction trMain = targetDb.TransactionManager.StartTransaction()) { using (Database db = new Database(false, true)) { // read the source dwg db.ReadDwgFile(@"D:\he10t.dwg", FileOpenMode.OpenForReadAndAllShare, true, ""); // get all entities using (Transaction trSource = db.TransactionManager.StartTransaction()) { BlockTable pBT = (BlockTable)trSource.GetObject(db.BlockTableId, OpenMode.ForRead, false); BlockTableRecord pBTR = (BlockTableRecord)trSource.GetObject(pBT[blockTabl​eRecord.ModelSpace], OpenMode.ForRead, false); foreach (ObjectId id in pBTR) { // ...open entity and filter filteredIds.Add(id); } } // clone the filtered entities in current document using (ACAP.DocumentLock dl = ACAP.Application.DocumentManager.MdiActiveDocument​.LockDocument()) { using (IdMapping mapping = new IdMapping()) { // now clone the objects into the destdb ObjectId destDbMsId = SymbolUtilityServices.GetBlockModelSpaceId(targetD​b); db.WblockCloneObjects(filteredIds, destDbMsId, mapping, DuplicateRecordCloning.Replace, false); } } } trMain.Commit(); } filteredIds.Dispose(); } }
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