private void PopulateList()
        {
            var history = HistorySerivce.GetHistory();

            LeaveList = new ObservableCollection <AppliedLeave>();
            LeaveList.Clear();
            foreach (AppliedLeave leave in history)
            {
                LeaveList.Add(leave);
            }
        }
        private void PopulateList()
        {
            var history = HistorySerivce.GetHistory();

            AppliedLeaveList = new ObservableCollection <AppliedLeave>();
            AppliedLeaveList.Clear();
            foreach (AppliedLeave leave in history)
            {
                AppliedLeaveList.Add(leave);
            }

            var summary = SummaryService.GetSummary();

            LeaveList = new ObservableCollection <LeaveObject>();
            LeaveList.Clear();
            foreach (LeaveObject leave in summary)
            {
                LeaveList.Add(leave);
            }
        }