public PropertyGridConverterParameterPair(PropertyGrid pg, object param)
 {
     PropertyGrid       = pg;
     ConverterParameter = param;
 }
 public PropertyGridShell(PropertyGrid pg)
     : base(new TaskQueueDispatcher(pg.Dispatcher))
 {
     this.pg = pg;
     tabs    = new Dictionary <string, PropertyGridTabItemContent>();
 }