知道的帮忙解答一下子

liudaohuang

  [CommandMethod("testd")]
  public void testd()
  {
    AcadApplication acadapp = (AcadApplication)Application.AcadApplication;   
   try
   {   
    Object ps,pe;    
     ps = acadapp.ActiveDocument.Utility.GetPoint(,"指定起点");
     pe = acadapp.ActiveDocument.Utility.GetPoint(ps,"指定终点：");
    AcadLine acadline =acadapp.ActiveDocument.ModelSpace.AddLine(ps,pe);
   }
   catch(System.Exception e)
   {
    Autodesk.AutoCAD.ApplicationServices.Application.ShowAlertDialog(e.Message);
   }
  }

用C# 怎么处理红色的东西？