public async Task <IActionResult> OnGetAsync() { Employee = await userManager.GetUserAsync(User).ConfigureAwait(false); Role = await roleManager.FindByIdAsync(Employee.RoleId.ToString()).ConfigureAwait(false); if (!Role.CanAdministerSystem) { return(RedirectToPage("/Index")); } var results = (await venues.FetchCountedProductTypes(PageNumber, 20).ConfigureAwait(false)) .Ensure(e => e.HasValue, "Product Types found") .OnSuccess(e => e.Value) .OnBoth(e => e.IsSuccess ? e.Value : new PaginatedResult <ProductType> { Data = new List <ProductType>(), Count = 0 }); TotalResults = results.Count; ProductTypes = results.Data; Title = $"Product types ({TotalResults})"; HasNextPage = (PageNumber + 1) <= (TotalResults / 20); return(Page()); }