private async Task Filter()
{
IEnumerable <RoomInfo> collection = null;
if (DateTimeSpan.IsTimeInclude && DateTimeSpan.Validate())
{
collection = await _roomRepository.FilterRooms(DateTimeSpan.FromDate, DateTimeSpan.ToDate, DateTimeSpan.FromTime, DateTimeSpan.ToTime);
}
else if (DateTimeSpan.IsDateValidate())
{
collection = await _roomRepository.FilterRooms(DateTimeSpan.FromDate, DateTimeSpan.ToDate);
}
if (collection != null)
{
RoomInfoColleciton = new ObservableCollection <RoomInfo>(collection);
}
else
{
RoomInfoColleciton.Clear();
}
}