public DialogAlarmViewModel(
     ICollectionModel <eventwarn> dataModel)
 //List<eventwarn> alarms)
 {
     this._dataModel = dataModel;
     //this.Alarms = (ListCollectionView)new ListCollectionView((IList)alarms);
     this.Alarms = (ListCollectionView) new ListCollectionView((IList)_dataModel.Data);
     using (Alarms.DeferRefresh())
     {
         Alarms.Filter = delegate(object obj)
         {
             eventwarn alarm = obj as eventwarn;
             if (alarm != null && (!alarm.handlestatus.HasValue || alarm.handlestatus == 0) && alarm.action == "trig")
             {
                 return(true);
             }
             return(false);
         };
         Alarms.SortDescriptions.Add(new SortDescription("time", ListSortDirection.Descending));
     }
 }