HYTOS

        #region TEST

        [CommandMethod("TestS", Autodesk.AutoCAD.Runtime.CommandFlags.UsePickSet)]

        public static void TestSelection()

        {

            // Get the current document and database, and start a transaction

            Autodesk.AutoCAD.ApplicationServices.Document acDoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;

            Database acCurDb = acDoc.Database;

            Editor acDocEd = acDoc.Editor;

            // Request for objects to be selected in the drawing area

            PromptSelectionResult acSSPrompt = acDocEd.GetSelection();

            // If the prompt status is OK, objects were selected

            if (acSSPrompt.Status == PromptStatus.OK)

            {

                ObjectId[] selectedObjectIds = acSSPrompt.Value.GetObjectIds();

                // Get the last selected entity

                if (selectedObjectIds.Length > 0)

                {

                    ObjectId objIdBlock = selectedObjectIds[0];

                    using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())

                    {

                        DBObject objDB = acTrans.GetObject(objIdBlock, OpenMode.ForRead, true);

                        if (objDB != null)

                        {

                            // check if the selected entity is of Type BlockReference

                            if (objDB.GetType() == typeof(BlockReference))

                            {

                                BlockReference block = objDB as BlockReference;

                                // open an entity in write mode so that we can modify its color

                                //Entity objDb = (Entity)acTrans.GetObject(objIdBlock, OpenMode.ForWrite);

                                //if (objDb != null)

                                //{

                                //    objDb.ColorIndex = 0;// white color

                                //}

                            }

                        }

                        acTrans.Commit();

                    }

                }

            }

        }

        #endregion