public async Task <ActionResult> Seminar(string sortOrder, string sortBy, string searchBy, string search, int?pageNumber, int?pageSize)
{
var paging = new Paging(pageNumber, pageSize);
sortOrder = string.IsNullOrEmpty(sortOrder) ? "asc" : sortOrder;
ViewBag.Sorting = sortOrder;
ViewBag.SortBy = sortBy;
ViewBag.Search = !string.IsNullOrEmpty(search) ? search : "";
ViewBag.SearchBy = !string.IsNullOrEmpty(searchBy) ? searchBy : "Name";
ViewBag.CurrentPage = paging.PageNumber;
ViewBag.PageSize = paging.PageSize;
var result = await seminarService.GetAllAsync(new Sorting(sortOrder, sortBy), new Filtering(searchBy, search), paging);
var pageCount = paging.TotalItemsCount / paging.PageSize;
ViewBag.TotalPageCount = paging.TotalItemsCount % paging.PageSize == 0 ? pageCount : pageCount + 1;
return(View(mapper.Map <IEnumerable <SeminarViewModel> >(result)));
}