功能

通过CAD二次开发获取块名称、编号、位置、属性等息。

代码

 public void GetCADLocationData()
 {
     // 获取当前文档和数据库
     Document doc = Application.DocumentManager.MdiActiveDocument;
     Database db = doc.Database;
     Editor ed = doc.Editor;
     // 开始事务
     using(Transaction tr = db.TransactionManager.StartTransaction())
     {
         // 打开模型空间块表记录
         BlockTable blockTable = (BlockTable) tr.GetObject(db.BlockTableId, OpenMode.ForRead);
         BlockTableRecord btr = (BlockTableRecord) tr.GetObject(blockTable[BlockTableRecord.ModelSpace], OpenMode.ForRead);
         // 遍历模型空间中的所有对象
         int n = 1;
         foreach(ObjectId id in btr)
             {
                 // 检查是否为块参照
                 Entity ent = tr.GetObject(id, OpenMode.ForRead) as Entity;
                 BlockReference blockRef = ent as BlockReference;
                 //ed.WriteMessage("1234");
                 //ed.WriteMessage(blockRef.Name);
                 if(ent != null && ent is BlockReference && blockRef.Name == "钻孔")
                 {
                     // 输出块名称、编号
                     ed.WriteMessage($ "\n块名称: {blockRef.Name + " - " + n}");
                     // 输出块坐标XY
                     ed.WriteMessage($ "\n块位置: {blockRef.Position.ToString()}");
                     // 遍历块中的每个属性
                     foreach(ObjectId attrId in blockRef.AttributeCollection)
                     {
                         DBObject obj = tr.GetObject(attrId, OpenMode.ForRead);
                         if(obj is AttributeReference)
                         {
                             AttributeReference attribute = obj as AttributeReference;
                             // 输出属性值--钻孔号、高程值
                             ed.WriteMessage($ "\n{attribute.Tag+": "+ attribute.TextString}");
                         }
                     }
                     n++;
                 }
             }
             // 提交事务
         tr.Commit();
     }
 }

运行截图