public async Task <PageDataContainer <TownDto> > GetPagedTowns(string filter, PageArguments pageArguments)
{
filter = filter?.ToLower() ?? string.Empty;
PageDataContainer <TownDto> pagedTowns = await _townRepository.GetPagedTows(filter, pageArguments);
if (pagedTowns.PageData.Count == 0)
{
return(null);
}
return(pagedTowns);
}