Pass multiple values of the same parameter for search method - ajax

Question

I would like to update my search function, so that it would accept additional parameters, which will be builed dinamically with checkboxes(let's say for a location NY AND Tokio AND Berlin). For now, my controller accepts page number and a search string, which are called with Ajax for infinate pagination.
So my search link is now like: /TopEventsul?searchString=HouseParty
and would like to add more search functions like: /TopEventsul?searchString=HouseParty&Location=London&Location=Tokio
Can u please point me to the right direction or maybe give me some examples?
Bellow is my controller function
// GET: Ul
public ActionResult Index(int? pageNum, string searchString)
{
pageNum = pageNum ?? 0;
ViewBag.IsEndOfRecords = false;
if (Request.IsAjaxRequest())
{
var customers = GetRecordsForPage(pageNum.Value);
ViewBag.IsEndOfRecords = (customers.Any()) && ((pageNum.Value * RecordsPerPage) >= customers.Last().Key);
return PartialView("_TopEventLi", customers);
}
else
{
LoadAllTopEventsToSession(searchString);
ViewBag.TopEvents = GetRecordsForPage(pageNum.Value);
return View("Index");
}
}
public void LoadAllTopEventsToSession(string searchString)
{
var students = from s in db.TopEvents
select s;
if (!String.IsNullOrEmpty(searchString))
{
students = students.Where(s => s.Location.Contains(searchString)
|| s.Title.Contains(searchString));
}
var customers = students.ToList();
int custIndex = 1;
Session["TopEventi"] = customers.ToDictionary(x => custIndex++, x => x);
ViewBag.TotalNumberCustomers = customers.Count();
}
public Dictionary<int, TopEvents> GetRecordsForPage(int pageNum)
{
Dictionary<int, TopEvents> customers = (Session["TopEventi"] as Dictionary<int, TopEvents>);
int from = (pageNum * RecordsPerPage);
int to = from + RecordsPerPage;
return customers
.Where(x => x.Key > from && x.Key <= to)
.OrderBy(x => x.Key)
.ToDictionary(x => x.Key, x => x.Value);
}
Regards!

Answer 1

Here you have Location as fixed parameter, so you can simply do like these,
public ActionResult Index(int? pageNum, string searchString, IEnumerable<string> Location)
{
// Your code
}
if you have any other parameters you can also add them, for exa.
your parameter is param and it's type is int then
public ActionResult Index(int? pageNum, string searchString, int param)
{
// Your code
}
//Ajax Call for Index
function testAjax() {
$.ajax({
url: "#Url.Content("~/Your-Controller/Index")",
data: "pageNum=" + your data for pageNum + "&searchString=" + your searchString + "&param=" + param,
dataType: "json",
type: "Post",
contentType: "application/json; charset=utf-8",
beforeSend: function () {
//Code for before send whatever you have to do.
},
success: function (data) {
//Your code when all ok
},
error: function (response) {
//Your code when error ocure
alert(response.responseText);
},
failure: function (response) {
//your code for failure
alert(response.responseText);
}
})
return false;
}