c# autocad 将一个DWG里的管线复制到另一个DWG中

Question

c# autocad将一个DWG里的特定图层提取到另一个DWG中

Answer 1

 1.在cad2012环境下：

须引用objectarx开发包

PromptPointResult ppr = ed.GetPoint("请选择插入点："); 

Point3d pt = ppr.Value; //这里获得插入点

utility.WriteToEditor(pt.ToString()); 

blockPath = "b_sample.dwg";
using (Database blkDb = new Database(false, true)) 
{ 

    //read drawing 

    blkDb.ReadDwgFile(blockPath , System.IO.FileShare.Read, true, null); 

    blkDb.CloseInput(true); 

    using (DocumentLock docLock = doc.LockDocument())//多文档要先这样，否则报至命错误 

    { 

        using (Transaction t = doc.TransactionManager.StartTransaction()) 

        { 
     string name=“aa”;//aa是不与blockPath文件中的任何块重名的字符串
            //insert it as a new block 

            ObjectId idBTR = doc.Database.Insert(aa, blkDb, false); 

            //create a ref to the block 

            BlockTable bt = (BlockTable)t.GetObject(doc.Database.BlockTableId, OpenMode.ForRead); 

            BlockTableRecord btr = (BlockTableRecord)t.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite); 

            using (BlockReference bref = new BlockReference(pt, idBTR)) //pt是一个Point3D坐标,这里是插入进当前dwg文件中

            { 

                btr.AppendEntity(bref); 

                t.AddNewlyCreatedDBObject(bref, true); 

            } 

            t.Commit();   就是这样  谢谢
       }
   }
}



2.脱离CAD环境下

需引用TDWGNET开发包

 using (new Services())
             {
                 using (Database db = new Database(true, true))
                 {
                     using (Transaction ts = db.TransactionManager.StartTransaction())
                     {
                         using (BlockTable bt = ts.GetObject(db.BlockTableId,OpenMode.ForWrite) as BlockTable)
                         {
                             BlockTableRecord btr1 = new BlockTableRecord();
                             Database odb = new Database(false, false);
                             odb.ReadDwgFile("aaa.dwg", FileOpenMode.OpenForReadAndAllShare, true, null);
                             odb.CloseInput(true);
                             ObjectId objid = db.Insert("aa", odb, false);//这里插入进当前的dwg文件了
                             BlockTableRecord btr = new BlockTableRecord();//这里是插入另一个块
                             btr.Name = "000";
                             Circle c = new Circle(new Point3d(0, 0, 0), Vector3d.ZAxis, 100);
                             btr.AppendEntity(c);
                             ts.AddNewlyCreatedDBObject(c, true);
                             bt.Add(btr);
                             ts.AddNewlyCreatedDBObject(btr, true);
                         }
                         ts.Commit();
                     }


                     //using (Transaction ts = db.TransactionManager.StartTransaction())
                     //{
                     //    using (BlockTable bt = (BlockTable)ts.GetObject(db.BlockTableId, OpenMode.ForRead))
                     //    {
                     //        BlockTableRecord btr=ts.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;
                     //        BlockReference br = new BlockReference(new Point3d(0, 0, 0), bt["aa"]);//这里是插入块于当前的dwg中
                     //        btr.AppendEntity(br);
                     //        ts.AddNewlyCreatedDBObject(br, true);
                     //    }
                     //    ts.Commit();
                     //}
                     db.SaveAs(path + "\\test.dwg", DwgVersion.Current);//保存文件
                 }
             }
        }