how to Cascade Autocomplete Extender in MVC ?

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Scenario: I will select a City through a AutocompleteExtender. On the selection of City i want State, Region and Country to be filled automatically.

.cshtmlCode:

C#

@Html.LabelFor(m => m.BranchDetails.City)
<div>@Html.EditorFor(model => model.BranchDetails.City, new { htmlAttributes = new { @class = "form-control", style="z-index:999999" }, id = string.Format("txtCity") })
@Html.HiddenFor(model => model.BranchDetails.City, new { id = string.Format("hdfCity") })

Script:

HTML

<script type="text/javascript">
        $("#BranchDetails_City").autocomplete({
            source: function (request, response) {
                var city = new Array();
                $.ajax({
                    async: false,
                    cache: false,
                    type: "POST",
                    url: 'AutoCompleteCity',
                    data: { "term": request.term },
                    success: function (data) {
                        for (var i = 0; i < data.length ; i++) {
                            city[i] = { label: data[i].Value, Id: data[i].Key };
                        }
                    }
                });
                response(city);
            },
            select: function (event, ui) {
                $("#hdfCity").html(ui.item.Id)
                $("#hdfCity").val(ui.item.Id)
            }
        });

    </script>

Controller Code:

C#

var listResult = new List<KeyValuePair<string, string>>();
      var listResultState = new List<KeyValuePair<string, string>>();
      var listResultRegion = new List<KeyValuePair<string, string>>();
      var listResultCountry = new List<KeyValuePair<string, string>>();
      foreach (var item in obj)
      {
          listResult.Add(new KeyValuePair<string, string>(item.CityID.ToString(), item.City));
          listResultState.Add(new KeyValuePair<string, string>(item.StateID.ToString(), item.State));
          listResultRegion.Add(new KeyValuePair<string, string>(item.RegionID.ToString(), item.Region));
          listResultCountry.Add(new KeyValuePair<string, string>(item.CountryID.ToString(), item.Country));
      }
      var finalResult = listResult.Where(s => s.Value.ToLower().Contains
                    (term.ToLower())).Select(w => w).ToList();
      return Json(finalResult, JsonRequestBehavior.AllowGet);

Here i am able to get the Values of StateID,State,Region,RegionID,Country,CountryID in their resp List<keyvaluepair> as above.
I am not able to go any further from here. I want to pass the above values to View n display the States,Regions,Country respectively.

Help.

Posted 12-Jan-16 23:09pm

Abrar Kazi

Updated 12-Jan-16 23:15pm

v3

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Comments

Sinisa Hajnal 13-Jan-16 6:05am

Put them in viewbag/session or your views data model.

Abrar Kazi 13-Jan-16 6:44am

No thats not wat i exactly was looking for. Thanks.

1 solution

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Abrar Kazi · Accepted Answer · 2016-01-13T00:41:00

OK i got the Solution.

C#

public JsonResult AutoCompleteCity(string term)
       {
           var obj = obj_db.Database.SqlQuery<Branch>("exec spGetCity @term={0}", term).
               Select(x => new Branch {CityID=x.CityID,City=x.City,State=x.State,StateID=x.StateID,Region=x.Region,RegionID=x.RegionID,Country=x.Country,CountryID=x.CountryID }).ToList();
           var listResult = new List<KeyValuePair<string, string>>();

           foreach (var item in obj)
           {
               listResult.Add(new KeyValuePair<string, string>(item.CityID.ToString(), item.City));
           }
           var finalResult = listResult.Where(s => s.Value.ToLower().Contains
                         (term.ToLower())).Select(w => w).ToList();
           return Json(finalResult, JsonRequestBehavior.AllowGet);
       }


       public JsonResult AutoCompleteState(string term)
       {
           var obj = obj_db.Database.SqlQuery<Branch>("exec spGetState @CityID={0}", Convert.ToInt32(term)).
               Select(x => new Branch { CityID = x.CityID, City = x.City, State = x.State, StateID = x.StateID, Region = x.Region, RegionID = x.RegionID, Country = x.Country, CountryID = x.CountryID }).ToList();

           var listResultExtra = new List<KeyValuePair<string, string>>();
           var listResultRegion = new List<KeyValuePair<string, string>>();
           var listResultCountry = new List<KeyValuePair<string, string>>();
           foreach (var item in obj)
           {
               listResultExtra.Add(new KeyValuePair<string, string>(item.StateID.ToString(), item.State));
               listResultExtra.Add(new KeyValuePair<string, string>(item.RegionID.ToString(), item.Region));
               listResultExtra.Add(new KeyValuePair<string, string>(item.CountryID.ToString(), item.Country));
           }
           var finalResult = listResultExtra.Select(w => w).ToList();
           return Json(finalResult, JsonRequestBehavior.AllowGet);
       }

And the Script goes as: