Dealing with a small number of items

Hi,

I was trying out my project asp core 1.1 so I’m using 1.1.4 package… I found this bug:

If you put small number of items like this:

private void InitializeProducts()
		{
			for (var i = 0; i < 7; i++) // <=========== JUST 7 items 
			{
				var product = new Product();
				product.Name = "Product " + (i + 1);
				var categoryIndex = i % 4;
				if (categoryIndex > 2)
				{
					categoryIndex = categoryIndex - 3;
				}
				product.Category = allCategories[categoryIndex];
				allProducts.Add(product);
			}
		}

It won’t show anything on the page and the list will be empty.

My controller action looks like this:

public IActionResult Index(int? page)
		{
			var currentPageNum = page.HasValue ? page.Value : 1;

			var model = allProducts.ToPagedList(currentPageNum, 10);

			return View(model);
		}

*P.S: different kind of issue appears if you put 15 items.

Hope there is a fix (something like 1.1.5) for people who still use asp core 1.1.

[joeaudette]

The way I would do it is make your method GetAgentStudents return Paged Result of T of your model. ie pass in pagenumber and pagesize as params and only retrieve one page of data at a time from the db.

[yaseralnajjar]

I reproduced it in the attachment. Pagination.zip

My actual code is projecting data then making a PagedList:

public async Task<IActionResult> Index(string searchTerm = null, int page = 1)
		{
			ViewBag.SearchTerm = searchTerm;

			var agent = await _userManager.GetUserAsync(User);

			var identity = (ClaimsIdentity)User.Identity;
			var claimsPrincipal = new ClaimsPrincipal(identity);

			var students = _agentStudentService.GetAgentStudents(agent, claimsPrincipal)
								.FilterByNameOrEmail(searchTerm)
								.ToStudentDetailsViewModels(_environment);

			var result = students.ToPagedListViewModel(page, 5);

			return View(result);
		}

Where students is an IQueryable of StudentDetailsViewModel.

Do you suggest any other better approach?