1. #region 注册RegApp
    2. public static void CheckRegApp(string regapptablename)
    3. {           
    4.     Database db = HostApplicationServices.WorkingDatabase;          
    5.     using (Transaction trans = db.TransactionManager.StartTransaction())
    6.     {       
    8.         RegAppTable appTbl = trans.GetObject(db.RegAppTableId,OpenMode.ForWrite) as RegAppTable;
    9.         if (!appTbl.Has(regapptablename))
    10.         {
    11.             RegAppTableRecord appTblRcd = new RegAppTableRecord();
    12.             appTblRcd.Name = regapptablename;
    13.             appTbl.Add(appTblRcd);
    14.             trans.AddNewlyCreatedDBObject(appTblRcd, true);
    15.         }
    16.         trans.Commit();
    17.     }
    18.     return ;
    19. }
    20. #endregion
    22. [CommandMethod("mydra")]
    23. public static void mydra()
    24. {
    27.     // 获取当前数据库
    28.     Document acDoc = Application.DocumentManager.MdiActiveDocument;
    29.     Database acCurDb = acDoc.Database;
    30.     // Start a transaction启动事务
    31.     using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
    32.     {
    33.         // Open the Block table for read以读模式打开块表
    34.         BlockTable acBlkTbl;
    35.         acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,
    36.                                      OpenMode.ForRead) as BlockTable;
    37.         // Open the Block table record Model space for write
    38.         // 以写模式打开块表记录ModelSpace
    39.         BlockTableRecord acBlkTblRec;
    40.         acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace],
    41.                                         OpenMode.ForWrite) as BlockTableRecord;
    42.         // Create the radial dimension创建半径标注
    43.         RadialDimension acRadDim = new RadialDimension();
    44.         acRadDim.Center = new Point3d(0, 0, 0);
    45.         acRadDim.ChordPoint = new Point3d(5, 5, 0);
    46.         acRadDim.LeaderLength = 5;               
    47.         acRadDim.DimensionStyle = acCurDb.Dimstyle;
    48.         // 添加新对象到模型空间和事务               
    49.         CheckRegApp("ACAD_DSTYLE_DIMRADIAL_EXTENSION");//自定义函数检查RegApp名字是否存在，不存在就添加regApp名字
    50.         ResultBuffer resBuf = new ResultBuffer();
    51.         resBuf.Add(new TypedValue((int)DxfCode.ExtendedDataRegAppName, "ACAD_DSTYLE_DIMRADIAL_EXTENSION"));
    52.         resBuf.Add(new TypedValue((int)DxfCode.ExtendedDataInteger16, 387));
    53.         resBuf.Add(new TypedValue((int)DxfCode.ExtendedDataInteger16, 1));
    54.         resBuf.Add(new TypedValue((int)DxfCode.ExtendedDataInteger16, 388));
    55.         resBuf.Add(new TypedValue((int)DxfCode.ExtendedDataReal, 6.26953));//开始角度
    56.         resBuf.Add(new TypedValue((int)DxfCode.ExtendedDataInteger16, 390));
    57.         resBuf.Add(new TypedValue((int)DxfCode.ExtendedDataReal, 2.67146));//结束角度
    58.         acRadDim.XData = resBuf;
    59.         acBlkTblRec.AppendEntity(acRadDim);
    60.         acTrans.AddNewlyCreatedDBObject(acRadDim, true);
    62.         // 提交修改，关闭事务
    63.         acTrans.Commit();
    64.     }
    65. }