ViewData item that has the key 'code' is of type 'SystemInt32'

Question

when i run my application it gives me this error on dropdownlist

The ViewData item that has the key 'talukcode' is of type 'System.Int32' but must be of type 'IEnumerable<SelectListItem>'.

Below is the view code :

@Html.DropDownListFor(model => model.talukcode, ViewBag.talukname as IEnumerable<SelectListItem>, "-- Select Tehsil --", new { @class = "form-control", @onchange = "FillCommune()", @id = "talukcode" })
                                @Html.ValidationMessageFor(model => model.talukcode, "", new { @class = "text-danger" })

Below is the Controller code :

public int VillageAdd(MasterModel model)
{
    int result = 0;
    int al_talukcd = 0, al_communecd = 0;
    string al_village = string.Empty;

    try
    {
        using (var context = new PPAEntities())
        {
            var datavillage = new ppavillage { regioncode = model.regioncode, talukcode = model.talukcode, villagecode = model.villagecode, villagename = model.villagename };

            if (model.villagecode == 0)
            {
                var name_alexits = context.ppavillages.Where(x => x.talukcode == model.talukcode && x.villagename == model.villagename).FirstOrDefault();
                if (name_alexits != null)
                {
                    al_talukcd = name_alexits.talukcode;
                    //al_communecd = name_alexits.communecode;
                    //al_village = name_alexits.villagename;
                    al_village = name_alexits.villagename;
                }


                if (al_village.Trim().ToUpper() != model.villagename.Trim().ToUpper())
                {

                    var MaxValue = (from c in context.ppavillages
                                    where c.regioncode == model.regioncode //&& c.talukcode == model.talukcode
                                    select c.villagecode).Max();
                    model.villagecode = MaxValue + 1;
                    ppavillage villagemst = new ppavillage();
                    villagemst.regioncode = model.regioncode;
                    villagemst.talukcode = model.talukcode;
                    villagemst.communecode = model.communecode;
                    villagemst.villagecode = model.villagecode;
                    villagemst.villagename = model.villagename;
                    villagemst.villagenamet = null;
                    villagemst.univillagename = null;
                    villagemst.urcodecn = "0";
                    villagemst.urcodet = "0";
                    context.ppavillages.Add(villagemst);
                    context.SaveChanges();
                    result = 1;
                }
                else
                {
                    result = 2;
                }

            }
            else
            {
                using (var contextdb = new PEntities())
                {
                    contextdb.ppavillages.Attach(datavillage);
                    contextdb.Entry(datavillage).Property(x => x.villagename).IsModified = true;
                    contextdb.SaveChanges();
                    result = 3;
                }
            }
        }

    }
    catch (Exception ex)
    {

    }
    return result;
}

How can i solve this error?

Jayraj Chhaya · Answer

The error message suggests that the 'talukcode' ViewData item is expected to be of type 'IEnumerable ', but it is currently of type 'System.Int32'. This error typically occurs when there is a mismatch between the expected data type and the actual data type being passed to the dropdown list. To resolve this error, you need to ensure that the 'talukcode' ViewData item is of the correct type. In the provided code snippet, it seems that the 'talukcode' ViewData item is being set as an integer value instead of a collection of SelectListItem objects. To fix this issue, you should modify the code in your controller to populate the 'talukcode' ViewData item with a collection of SelectListItem objects. Here's an example of how you can achieve this: public ActionResult YourActionMethod() { // Retrieve the data for the dropdown list var talukList = GetTalukList(); // Replace this with your actual logic to retrieve the taluk list // Convert the talukList to a collection of SelectListItem objects var talukSelectList = talukList.Select(t => new SelectListItem { Value = t.Id.ToString(), Text = t.Name }); // Set the 'talukcode' ViewData item with the talukSelectList ViewData["talukcode"] = talukSelectList; // Other code... return View(); } In your view code, you can then use the 'talukcode' ViewData item as follows: @Html.DropDownListFor(model => model.talukcode, ViewData["talukcode"] as IEnumerable , "-- Select Tehsil --", new { @class = "form-control", @onchange = "FillCommune()", @id = "talukcode" }) @Html.ValidationMessageFor(model => model.talukcode, "", new { @class = "text-danger" }) By ensuring that the 'talukcode' ViewData item is of the correct type, the error should be resolved, and the dropdown list should render correctly in your MVC application.

Jignesh Kumar · Answer

Hello, Please check this one, @Html.DropDownListFor(model => model.talukcode, (List )ViewBag.talukname, "-- Select Tehsil --", new { @class = "form-control", @onchange = "FillCommune()", @id = "talukcode" })

Ramesh Palanivel · Answer

Hi Garima, I cannot see any where you binded value for ViewBag.talukname. Try below code public List Taluklist(int regionid) { List list = new List (); using (var context = new PPAEntities()) { list = (from t in context.ppatalukmasters where t.regioncode == regionid orderby t.talukcode select new TalukList { regioncode = t.regioncode, talukcode = t.talukcode, talukname = t.talukname }).ToList(); } ViewBag.TalukName = list; return list; }

Garima Bansal · Answer

Ramesh Palanivel Sir, Below is controller code can you please tell me where i have to bind it public List Taluklist(int regionid) { List list = new List (); using (var context = new PPAEntities()) { list = (from t in context.ppatalukmasters where t.regioncode == regionid orderby t.talukcode select new TalukList { regioncode = t.regioncode, talukcode = t.talukcode, talukname = t.talukname }).ToList(); } return list; } public int VillageAdd(MasterModel model) { int result = 0; int al_talukcd = 0, al_communecd = 0; string al_village = string.Empty; try { using (var context = new PPAEntities()) { var datavillage = new ppavillage { regioncode = model.regioncode, talukcode = model.talukcode, villagecode = model.villagecode, villagename = model.villagename }; if (model.villagecode == 0) { var name_alexits = context.ppavillages.Where(x => x.talukcode == model.talukcode && x.villagename == model.villagename).FirstOrDefault(); if (name_alexits != null) { al_talukcd = name_alexits.talukcode; //al_communecd = name_alexits.communecode; //al_village = name_alexits.villagename; al_village = name_alexits.villagename; } if (al_village.Trim().ToUpper() != model.villagename.Trim().ToUpper()) { var MaxValue = (from c in context.ppavillages where c.regioncode == model.regioncode //&& c.talukcode == model.talukcode select c.villagecode).Max(); model.villagecode = MaxValue + 1; ppavillage villagemst = new ppavillage(); villagemst.regioncode = model.regioncode; villagemst.talukcode = model.talukcode; villagemst.communecode = model.communecode; villagemst.villagecode = model.villagecode; villagemst.villagename = model.villagename; villagemst.villagenamet = null; villagemst.univillagename = null; villagemst.urcodecn = "0"; villagemst.urcodet = "0"; context.ppavillages.Add(villagemst); context.SaveChanges(); result = 1; } else { result = 2; } } else { using (var contextdb = new PPAEntities()) { contextdb.ppavillages.Attach(datavillage); contextdb.Entry(datavillage).Property(x => x.villagename).IsModified = true; contextdb.SaveChanges(); result = 3; } } } } catch (Exception ex) { } return result; }

Ramesh Palanivel · Answer

Gariam, what you binding on your ViewBag,TalukName? As Jayaraj share sample code, it should be looks like, var talukSelectList = talukList.Select(t => new SelectListItem { Value = t.talukeCode.ToString(), Text = t.talukName });

Garima Bansal · Answer

In model,code is below public int talukcode { get; set; } public string talukname { get; set; }

Ramesh Palanivel · Answer

Hi Garima, The problem is on your code, @Html.DropDownListFor(model => model.talukcode, ViewBag.talukname as IEnumerable , "-- Select Tehsil --", new { @class = "form-control", @onchange = "FillCommune()", @id = "talukcode" }) @Html.ValidationMessageFor(model => model.talukcode, "", new { @class = "text-danger" }) ViewBag.talukname not able to assign type as IEnumerable . Check your code where you bind Talukname viewbag.

ViewData item that has the key 'code' is of type 'SystemInt32'

Answers (7)