How do you persist querystring values in asp.net mvc?

Question

What is a good way to persist querystring values in asp.net mvc?

If I have a url: /questions?page=2&sort=newest&items=50&showcomments=1&search=abcd

Answer 1

Here's how I done it in Asp.Net Core, first assign the query string parameters to ViewBags in your controller:

[HttpGet("/[controller]/[action]/{categoryId?}/{contractTypeId?}/{locationId?}")]
public IActionResult Index(Guid categoryId, int contractTypeId, Guid locationId)
{
    ViewBag.CategoryId = categoryId;
    ViewBag.ContractTypeId = contractTypeId;
    ViewBag.LocationId = locationId;

    ...
}

Then pass the values to your links like so:

   @teachingCategory.Description (@teachingCategory.Rank)



   @typeOfEmployment.Name



   @item.Id

Note that every link keep its own actual value and pass the rest of the route values through what we passed to ViewBag.