public class Command_test    {        [CommandMethod("tt", CommandFlags.Modal | CommandFlags.UsePickSet | CommandFlags.Redraw)]        public static void tt()        {            Database db = HostApplicationServices.WorkingDatabase;//当前的数据库            Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;            int aa = 0;            for (int i = 0; i < 50; i++)            {                using (Transaction tr = db.TransactionManager.StartTransaction())                {                    //新建圆                    var ent = EntityAdd.AddCircleToEntity(new Point3d(aa++, 0, 0), 0.5);                    EntityAdd.AddEntityToMsPs(tr, db, ent);                    //刷新内容                    Application.UpdateScreen();                    tr.Commit();                }                ed.WriteMessage(aa++.ToString()+"\n");//这两种不同感觉                 //ed.WriteMessage(aa++.ToString()+"\r");//这两种不同感觉                //高版本要加这句令命令栏立即执行                System.Windows.Forms.Application.DoEvents();                 //阻塞                System.Threading.Thread.Sleep(100);            }        }    }

 

代码效果: