// GET: Students
public IActionResult Index(
string sortOrder,
int?pageNumber)
{
ViewData["CurrentSort"] = sortOrder;
ViewData["NameSortParm"] = String.IsNullOrEmpty(sortOrder) ? "name_desc" : "";
ViewData["GroupSortParm"] = sortOrder == "Group" ? "Group_desc" : "Group";
var students = _servStudents.GetSortStudents(sortOrder);
int pageSize = 10;
return(View(PaginatedList <StudentsViewModel> .CreateAsync(students, pageNumber ?? 1, pageSize)));
}