Retriecing Tags From DB and PreLoad them

MVC JSON Controller

public JsonResult SearchCity(string searchTerm)
        {
            var city = _locationService.SearchCity(searchTerm);
            var result = city.Select(a => new { id = a.Id, text = a.City });
            return Json(result, JsonRequestBehavior.AllowGet);
        }

Select 2 Tags.js

//RazorView
// For Model Binding use String , to return list. 
// The Use to List<int> 

@Html.TextBoxFor(m => m.Category , new {id="supplytype" , type="hidden" })

// Javascript 
//////////////////////////////////
 // TAGS FOR CATEGORIES 
/////////////////////////////////
            $("#supplytype").select2({
                
        tags: true,
        ajax: {
            url: '@Url.Action("SearchCategory", "Suppliers")',
            dataType: 'json',
            data: function (term, page) {
                return {
                    searchTerm: term
                };
            },
            results: function (data, page) {
                return {
                    results: data
                };
            }
        }
    });
/////////////////////////////////////////
// Preload your Tags from Database 
/////////////////////////////////////////

            var mytags;
            $.ajax({
                url: URL.GetSuppierTags,
                dataType: "json",
                data: ({ supplierid: $("#SupplierID").attr("value") }),
                success: function (responsedata) {

                   
                    $("#supplytype").select2("data", responsedata);


                }
            });
//////////////////////////////////////////////////
// Tags to List<int>
//////////////////////////////////////////////////

 public List<SupplierCategoryMap> GetTags(string tags, int supplierid)
        {
            List<int> TagIds = new List<int>(tags.Split(',').Select(int.Parse));

            var p = new List<SupplierCategoryMap>();

            foreach (var tag in TagIds)
            {
                var s = new SupplierCategoryMap();
                s.SupplierId = supplierid;
                s.CategoryId = tag; 
                p.Add(s);

            }

            return p;