AutoCAD.net（二）：筛选

1.过滤块

            PromptSelectionOptions pOptions = new PromptSelectionOptions();
            TypedValue[] filList =    { new TypedValue((int)DxfCode.Start, "INSERT") };
            SelectionFilter filter = new SelectionFilter(filList);
            PromptSelectionResult res = ed.GetSelection(pOptions, filter);//***
            if (res.Status != PromptStatus.OK) return;
            Autodesk.AutoCAD.EditorInput.SelectionSet SS = res.Value;
            ObjectId[] idArray = SS.GetObjectIds();

2.过滤多线

            TypedValue[] filList =    { new TypedValue((int)DxfCode.Start, "LWPolyLine") };
            SelectionFilter filter = new SelectionFilter(filList);
            PromptSelectionResult res = ed.SelectAll(filter);//***
                       if (res.Status != PromptStatus.OK) return;
            Autodesk.AutoCAD.EditorInput.SelectionSet SS = res.Value;
            ObjectId[] idArray = SS.GetObjectIds();