cad.net 筛选、选择集

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();

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();

未消化：
CAD.net二次开发之图层，文字样式，标注样式，标注封装，引线的封装
https://blog.csdn.net/weixin_43288858/article/details/103106152