利用选择集对polyline进行过滤

nicklos

利用选择集对polyline进行过滤时，为什么选不到。而对比如LINE,CIRCLE均可实现？？

zhujiang1001

这个问题我这个菜鸟也遇到了，高手们帮帮忙解决下:     

       Database db = HostApplicationServices.WorkingDatabase;
            Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
            Transaction trans = db.TransactionManager.StartTransaction();

            TypedValue[] filList = new TypedValue[1];
            filList[0] = new TypedValue((int)DxfCode.Start, "PolyLine");
            SelectionFilter filter = new SelectionFilter(filList);

            PromptSelectionOptions Opts = new PromptSelectionOptions();
            PromptSelectionResult res = ed.GetSelection(Opts,filter);

zhujiang1001

曲线救国,这个法子好像可以:

             Database db = HostApplicationServices.WorkingDatabase;
             Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
             Transaction trans = db.TransactionManager.StartTransaction();

             PromptSelectionOptions Opts = new PromptSelectionOptions();
             PromptSelectionResult res = ed.GetSelection(Opts);
             Polyline plineSelected = new Polyline();

             if (res.Status != PromptStatus.OK)
             {
                ed.WriteMessage("您所选的不是PLINE线实体！");
                trans.Commit();
                trans.Dispose();
                return;
             }

             Autodesk.AutoCAD.EditorInput.SelectionSet SS = res.Value;

             ObjectId plid = SS.GetObjectIds()[0];//获取所选Pline线的ID
             Entity ent = (Entity)trans.GetObject(plid, OpenMode.ForRead, false);

             if (ent.GetType() == typeof(Polyline))
             {
                 plineSelected = (Polyline)ent;
             }
             double dtemp = plineSelected.StartPoint.X;
            
             trans.Commit();
             trans.Dispose();

sieben

new TypedValue((int)DxfCode.Start, "LWPolyLine");

liudaohuang

new TypedValue(0, "LWPolyLine");

楼上正解

sbydo

那二维多线段呢？？？？

还有其他的实体呢？？

斑竹知道吗？？？

求救啊！！！！！！！！！！！！

谢谢。

sbydo

知道了

"polyline"

但怎么读取二维多线段Polyline2d的顶点？？？