[分享]插入外部文件中块的C#实现方法

chase_wang

2. ////插入块
3. private static bool InsertBlock(string strBlockName, string strFilePath)
4. {
5. if (strBlockName.CompareTo("") == 0 || strFilePath.CompareTo("") == 0)
6. {
7. return false;
8. }
9. Autodesk.AutoCAD.ApplicationServices.Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
10. if (!System.IO.File.Exists(strFilePath))
11. {
12. CGcEditor.ShowMessage(string.Format("\nInput file :{0} no existed !", strFilePath));
13. return false;
14. }
16. using (Transaction tr = doc.TransactionManager.StartTransaction())
17. {
18. using (Database db = new Database(false, true))
19. {
20. db.ReadDwgFile(strFilePath, System.IO.FileShare.Read, true, null);
21. Autodesk.AutoCAD.DatabaseServices.TransactionManager trMag = db.TransactionManager;
22. using (Transaction trm = trMag.StartTransaction())
23. {
24. BlockTable sourceBlkTbl = (BlockTable)trm.GetObject(
25. db.BlockTableId, OpenMode.ForRead, false);
26. if (! sourceBlkTbl.Has(strBlockName))
27. {
28. return false;
29. }
30. ObjectIdCollection blockIds = new ObjectIdCollection();
31. blockIds.Add(sourceBlkTbl[strBlockName]);
33. IdMapping IdMap = new IdMapping();
34. db.WblockCloneObjects(blockIds, doc.Database.BlockTableId, IdMap, DuplicateRecordCloning.Replace, false);
36. }
37. }
38. tr.Commit();
39. }
40. return true;
41. }
43. public static ObjectId InsertBlock(string strFilePath, string strBlockName, Point3d insertPt)
44. {
45. ObjectId objId = new ObjectId();
46. if (strBlockName.CompareTo("") == 0 || strFilePath.CompareTo("") == 0)
47. {
48. return objId;
49. }
50. if (!System.IO.File.Exists(strFilePath))
51. {
52. CGcEditor.ShowMessage(string.Format("\nInput file :{0} no existed !", strFilePath));
53. return objId;
54. }
56. Autodesk.AutoCAD.ApplicationServices.Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
57. using (Transaction tr = doc.TransactionManager.StartTransaction())
58. {
59. BlockTable bt = (BlockTable)tr.GetObject(doc.Database.BlockTableId, OpenMode.ForRead);
60. if (! bt.Has(strBlockName))
61. {
62. if (! InsertBlock(strBlockName, strFilePath))
63. {
64. return objId;
65. }
66. }
68. BlockTableRecord btr = (BlockTableRecord)tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite);
69. using (BlockReference newBlkRef = new BlockReference(insertPt, bt[strBlockName]))
70. {
71. //Matrix3d mat3d = Matrix3d.Rotation(dbAngle, Vector3d.ZAxis, insertPt);
72. //bref.TransformBy(mat3d);
74. objId = btr.AppendEntity(newBlkRef);
75. tr.AddNewlyCreatedDBObject(newBlkRef, true);
76. }
77. tr.Commit();
78. tr.Dispose();
79. }
80. return objId;
81. }

////插入块 private static bool InsertBlock(string strBlockName, string strFilePath) { if (strBlockName.CompareTo("") == 0 || strFilePath.CompareTo("") == 0) { return false; } Autodesk.<a href="http://bbs.mjtd.com/forum-41-1.html" target="_blank" class="relatedlink">AutoCAD</a>.ApplicationServices.Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument; if (!System.IO.File.Exists(strFilePath)) { CGcEditor.ShowMessage(string.Format("\nInput file :{0} no existed !", strFilePath)); return false; } using (Transaction tr = doc.TransactionManager.StartTransaction()) { using (Database db = new Database(false, true)) { db.ReadDwgFile(strFilePath, System.IO.FileShare.Read, true, null); Autodesk.AutoCAD.DatabaseServices.TransactionManager trMag = db.TransactionManager; using (Transaction trm = trMag.StartTransaction()) { BlockTable sourceBlkTbl = (BlockTable)trm.GetObject( db.BlockTableId, OpenMode.ForRead, false); if (! sourceBlkTbl.Has(strBlockName)) { return false; } ObjectIdCollection blockIds = new ObjectIdCollection(); blockIds.Add(sourceBlkTbl[strBlockName]); IdMapping IdMap = new IdMapping(); db.WblockCloneObjects(blockIds, doc.Database.BlockTableId, IdMap, DuplicateRecordCloning.Replace, false); } } tr.Commit(); } return true; } public static ObjectId InsertBlock(string strFilePath, string strBlockName, Point3d insertPt) { ObjectId objId = new ObjectId(); if (strBlockName.CompareTo("") == 0 || strFilePath.CompareTo("") == 0) { return objId; } if (!System.IO.File.Exists(strFilePath)) { CGcEditor.ShowMessage(string.Format("\nInput file :{0} no existed !", strFilePath)); return objId; } Autodesk.AutoCAD.ApplicationServices.Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument; using (Transaction tr = doc.TransactionManager.StartTransaction()) { BlockTable bt = (BlockTable)tr.GetObject(doc.Database.BlockTableId, OpenMode.ForRead); if (! bt.Has(strBlockName)) { if (! InsertBlock(strBlockName, strFilePath)) { return objId; } } BlockTableRecord btr = (BlockTableRecord)tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite); using (BlockReference newBlkRef = new BlockReference(insertPt, bt[strBlockName])) { //Matrix3d mat3d = Matrix3d.Rotation(dbAngle, Vector3d.ZAxis, insertPt); //bref.TransformBy(mat3d); objId = btr.AppendEntity(newBlkRef); tr.AddNewlyCreatedDBObject(newBlkRef, true); } tr.Commit(); tr.Dispose(); } return objId; }

mkhsj929

如果原块有属性，则这种方法插入的块参照中属性值会丢掉，改为：

3.        public static ObjectId m_InsertBlockRef(ObjectId blockId, Point3d insertPt)
4.         {
5.             ObjectId blockRefId = ObjectId.Null;
6.             using (Transaction tr = mCommands.m_db.TransactionManager.StartTransaction())
7.             {
8.                 BlockTableRecord btr = tr.GetObject(mCommands.m_db.CurrentSpaceId, OpenMode.ForWrite) as BlockTableRecord;
9.                
10.                 BlockReference bref = new BlockReference(insertPt, blockId);//新建块参照，注意此时无属性参照
11.                 blockRefId = btr.AppendEntity(bref);//先加入数据库块表记录中
13.                 #region 加入默认属性
14.                 BlockTableRecord btrBlock = tr.GetObject(blockId, OpenMode.ForRead) as BlockTableRecord;
15.                 if (btrBlock.HasAttributeDefinitions)
16.                 {
17.                     foreach (ObjectId id in btrBlock)
18.                     {
19.                         DBObject ent = tr.GetObject(id, OpenMode.ForRead) as DBObject;
20.                         if (ent is AttributeDefinition)
21.                         {
22.                             AttributeDefinition attdef = ent as AttributeDefinition;//取得块的属性定义
23.                             AttributeReference attref = new AttributeReference();//新建属性参照
24.                             attref.SetPropertiesFrom(attdef);
25.                             attref.SetAttributeFromBlock(attdef, Matrix3d.Displacement(btrBlock.Origin.GetVectorTo(insertPt)));//复制属性
26.                             bref.AttributeCollection.AppendAttribute(attref);//附着属性参照
27.                             tr.AddNewlyCreatedDBObject(attref, true);                           
28.                         }
29.                     }
30.                 }               
31.                 #endregion
33.                 tr.AddNewlyCreatedDBObject(bref,true);
35.                 tr.Commit();
36.             }
37.             return blockRefId;
38.         }
39.     }

       public static ObjectId m_InsertBlockRef(ObjectId blockId, Point3d insertPt)         {             ObjectId blockRefId = ObjectId.Null;             using (Transaction tr = mCommands.m_db.TransactionManager.StartTransaction())             {                 BlockTableRecord btr = tr.GetObject(mCommands.m_db.CurrentSpaceId, OpenMode.ForWrite) as BlockTableRecord;                                 BlockReference bref = new BlockReference(insertPt, blockId);//新建块参照，注意此时无属性参照                 blockRefId = btr.AppendEntity(bref);//先加入数据库块表记录中                 #region 加入默认属性                 BlockTableRecord btrBlock = tr.GetObject(blockId, OpenMode.ForRead) as BlockTableRecord;                 if (btrBlock.HasAttributeDefinitions)                 {                     foreach (ObjectId id in btrBlock)                     {                         DBObject ent = tr.GetObject(id, OpenMode.ForRead) as DBObject;                         if (ent is AttributeDefinition)                         {                             AttributeDefinition attdef = ent as AttributeDefinition;//取得块的属性定义                             AttributeReference attref = new AttributeReference();//新建属性参照                             attref.SetPropertiesFrom(attdef);                             attref.SetAttributeFromBlock(attdef, Matrix3d.Displacement(btrBlock.Origin.GetVectorTo(insertPt)));//复制属性                             bref.AttributeCollection.AppendAttribute(attref);//附着属性参照                             tr.AddNewlyCreatedDBObject(attref, true);                                                    }                     }                 }                                #endregion                 tr.AddNewlyCreatedDBObject(bref,true);                 tr.Commit();             }             return blockRefId;         }     }

chpmould

学习了，一定要顶

jdjb

好东西 顶啊！！！
有这样肯分享的高手我们这样的小兵才有希望升级。致敬一下！！

无志者常立志

楼主辛苦了,正好不知道怎么插入外来块!!!!

ORCHI

这个好，最近正在研究使用C#进行cad二次开发，多谢！

lzz0517

楼主，不知道这些块是怎么影响块的图形的呢？

田志民

mkhsj929 发表于 2010-10-26 21:25
如果原块有属性，则这种方法插入的块参照中属性值会丢掉，改为：

学习学习 ，不错、、、、、、、

yxr_MJTD

mkhsj929 发表于 2010-10-26 21:25  如果原块有属性，则这种方法插入的块参照中属性值会丢掉，改为：

但是按这种方法，为什么最后属性的注记的位置始终不是自己想要的结果？