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Dealing with a small number of items

See original GitHub issue


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];

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.

Issue Analytics

  • State:closed
  • Created 6 years ago
  • Comments:6

github_iconTop GitHub Comments

joeaudettecommented, Dec 15, 2017

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.

yaseralnajjarcommented, Dec 15, 2017

I reproduced it in the attachment.

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)

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

			return View(result);

Where students is an IQueryable of StudentDetailsViewModel.

Do you suggest any other better approach?

Read more comments on GitHub >

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