void prepIndex(LookupViewModel vm)
{
vm.LookupGroups = LookupRepo.GetGroups().Select(x => new Microsoft.AspNetCore.Mvc.Rendering.SelectListItem {
Value = x.GroupId.ToString(), Text = x.Descr
});
if (vm.SelectedGroupId != 0)
{
vm.Lookups = LookupRepo.GetLookups(vm.SelectedGroupId);
}
}