.NET有COM的CopyObjects吗？找到方法了！

gsteven

com有object.CopyObjects(Objects[, Owner][, IDPairs]) ，object是MSITStore:E:\New%20Study\CAD\acadautovba.chm::/idh_database_object.htm">Database, MSITStore:E:\New%20Study\CAD\acadautovba.chm::/idh_document_object.htm">Document用于将一个document的图形复制到另外一个document当中，而且在 CopyObjects 操作期间，被 Objects 参数中的源对象拥有或引用的对象也将被复制。

不知道.net有没有相同功能的函数？查看了对象浏览器的document和database对象，都没有类似的方法

gsteven

找到方法了！

使用WblockCloneObjects

注意红色的部分，不过不知道能不能复制块参照，并且把块参照的引用块定义也一起复制过去，com里的copyobjects方法可是可以做到这一点的，我试验过。
 

using Autodesk.AutoCAD.Runtime;

using Autodesk.AutoCAD.ApplicationServices;

using Autodesk.AutoCAD.DatabaseServices;

using Autodesk.AutoCAD.Geometry;

[CommandMethod("CopyObjectsBetweenDatabases", CommandFlags.Session)]

public static void CopyObjectsBetweenDatabases()

{

  ObjectIdCollection acObjIdColl = new ObjectIdCollection();

  // Get the current document and database

  Document acDoc = Application.DocumentManager.MdiActiveDocument;

  Database acCurDb = acDoc.Database;

  // Lock the current document

  using (DocumentLock acLckDocCur = acDoc.LockDocument())

  {

      // Start a transaction

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

      {

          // Open the Block table record for read

          BlockTable acBlkTbl;

          acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,

                                       OpenMode.ForRead) as BlockTable;

          // Open the Block table record Model space for write

          BlockTableRecord acBlkTblRec;

          acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace],

                                          OpenMode.ForWrite) as BlockTableRecord;

          // Create a circle that is at (0,0,0) with a radius of 5

          Circle acCirc1 = new Circle();

          acCirc1.SetDatabaseDefaults();

          acCirc1.Center = new Point3d(0, 0, 0);

          acCirc1.Radius = 5;

          // Add the new object to the block table record and the transaction

          acBlkTblRec.AppendEntity(acCirc1);

          acTrans.AddNewlyCreatedDBObject(acCirc1, true);

          // Create a circle that is at (0,0,0) with a radius of 7

          Circle acCirc2 = new Circle();

          acCirc2.SetDatabaseDefaults();

          acCirc2.Center = new Point3d(0, 0, 0);

          acCirc2.Radius = 7;

          // Add the new object to the block table record and the transaction

          acBlkTblRec.AppendEntity(acCirc2);

          acTrans.AddNewlyCreatedDBObject(acCirc2, true);

          // Add all the objects to copy to the new document

          acObjIdColl = new ObjectIdCollection();

          acObjIdColl.Add(acCirc1.ObjectId);

          acObjIdColl.Add(acCirc2.ObjectId);

          // Save the new objects to the database

          acTrans.Commit();

      }

      // Unlock the document

  }

  // Change the file and path to match a drawing template on your workstation

  string sLocalRoot = Application.GetSystemVariable("LOCALROOTPREFIX") as string;

  string sTemplatePath = sLocalRoot + "Template\\acad.dwt";

  // Create a new drawing to copy the objects to

  DocumentCollection acDocMgr = Application.DocumentManager;

  Document acNewDoc = acDocMgr.Add(sTemplatePath);

  Database acDbNewDoc = acNewDoc.Database;

  // Lock the new document

  using (DocumentLock acLckDoc = acNewDoc.LockDocument())

  {

      // Start a transaction in the new database

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

      {

          // Open the Block table for read

          BlockTable acBlkTblNewDoc;

          acBlkTblNewDoc = acTrans.GetObject(acDbNewDoc.BlockTableId,

                                             OpenMode.ForRead) as BlockTable;

          // Open the Block table record Model space for read

          BlockTableRecord acBlkTblRecNewDoc;

          acBlkTblRecNewDoc = acTrans.GetObject(acBlkTblNewDoc[BlockTableRecord.ModelSpace],

                                              OpenMode.ForRead) as BlockTableRecord;

          // Clone the objects to the new database

          IdMapping acIdMap = new IdMapping();

          acCurDb.WblockCloneObjects(acObjIdColl, acBlkTblRecNewDoc.ObjectId, acIdMap,

                                     DuplicateRecordCloning.Ignore, false);

          // Save the copied objects to the database

          acTrans.Commit();

      }

      // Unlock the document

  }

  // Set the new document current

  acDocMgr.MdiActiveDocument = acNewDoc;

}

雪山飞狐_lzh

还有深度Clone

db.DeepCloneObjects(...)

gsteven

深度clone有什么不一样吗？

雪山飞狐_lzh

深层拷贝-复制数据

浅层拷贝-只复制引用

具体的要在使用的过程中去理解它