How to get The Selected Year and Month from drop down list to controller in asp.net MVC

Question

How to get the Selected Year and month from the drop down list from view to controller. When i tried its giving error as There is no ViewData item of type 'IEnumerable' that has the key "Yearitems". As i'm a new to Asp.net mvc so any help will be Appriciated. Thanks in Advance.

This is My View

<h3>Search by PhoneNumber:@Html.TextBox("SearchString",ViewBag.CurrentFilter as string)  </h3>


    <p><h3>Year:@Html.DropDownList("Yearitems",    (IEnumerable<SelectListItem>)ViewBag.SelectList as SelectList, "Select Year")</h3>

    <h3>Month:@Html.DropDownList("MonthItems",(IEnumerable<SelectListItem>)ViewBag.SelectMonthList as SelectList,"Select Month")</h3></p>

<p><input type="submit" value="Search" /></p>

<script>
    $(document).ready(function () {
        $("#Yearitems").change(function () {

            //alert($("#Yearitems>option:selected").attr("Value"));
            $.ajax({
                type: "Post",
                url: '@Url.Action("GetMonths","AirtelManagement")',
                data: { YearId: $("#Yearitems>option:selected").attr("Value") },
                datatype: "Json",
                success: function (data) {

                    $("#MonthItems").html("");
                    $.each(data, function (index, item) {
                        $("#MonthItems").append(new Option(item.MonthName, item.MonthSelectedId));
                    });
                },
                error: function () {
                    alert("Select Year");
                }
            });
        });
    });
</script>

}

This is My controller.

     public ActionResult ViewDataOfDatabase(string sortorder, string currentFilter,  string searchString, int? page,string SelecetedYear,string SelectedMonth)
     {

         AirtelManagementModel _Airtelmodel = new AirtelManagementModel();
         IEnumerable<clsYearOfDate> SelectList = GetYears();
         //IEnumerable<MonthListClass> SelectMonthList = GetMonths(YearId);
         IEnumerable<SelectListItem> Yearitems = (from v in SelectList
                                             select new SelectListItem()
                                             {
                                                 Value = v.YearSelectedId.ToString(),
                                                 Text = v.YearOfDate.ToString(),


                                             });
         ViewBag.SelectList = Yearitems;

         //IEnumerable<SelectListItem> MonthItems = (from m in SelectMonthList
         //                                          select new SelectListItem()
         //                                          {
         //                                              Value = m.MonthSelectedId.ToString(),
         //                                              Text = m.MonthName,


         //                                          });
         //ViewBag.SelectMonthList = MonthItems;
         IEnumerable<SelectListItem> MonthItems = Enumerable.Empty<SelectListItem>();
         ViewBag.SelectMonthList = MonthItems;
        List<AirtelManagementModel> list = ViewDetails();
        ViewBag.CurrentSort = sortorder;

        ViewBag.PhoneSortParm = String.IsNullOrEmpty(sortorder) ? "Phone_desc" : "";
        if (searchString != null )
        {
            page = 1;
        }
        else
        {

            searchString = currentFilter;
        }
        //if(searchString!=null)
        //{
        ViewBag.SelectList = SelecetedYear;
        ViewBag.SelectMonthList = SelectedMonth;
            ViewBag.CurrentFilter = searchString;
            var airteldetails = from _model in list
                                select _model;
            if(!String.IsNullOrEmpty(searchString))
            {
                airteldetails=airteldetails.Where(A=>A.AirtelNumber.ToString().Contains(searchString.ToString()));

            }

            //airteldetails=airteldetails.OrderByDescending(A=>A.AirtelNumber);
            int pageSize = 5;
            int pageNumber = (page ?? 1); 
            //return View(airteldetails.ToList());
            return View(airteldetails.ToPagedList(pageNumber, pageSize));
        //}
        //if (list.Count > 0)
        //{
        //    var airteldetails = from _model in list
        //                        select _model;
        //    return View(airteldetails.ToPagedList(pageNumber,pageSize));
        //}
        //else
        //{
        //    ModelState.AddModelError("Error", "No Data found in Database");
        //    return RedirectToAction("ImportExcelFile", "AirtelManagement");
        //}
    }

Answer 1

The name of your Select/DDL needs to be the same as the parameter on your controller action method, ie public ActionResult ViewDataOfDatabase(...,String YearItems, String MonthItems)or change the name in your @Html.DropDownList("name"... to SelectedMonth and SelectedYear to match that of the DDL