The given key was not present in the dictionary. in Razorview

Question

I have error The given key was not present in the dictionary. in Razor view

Please check below code

<select class="form-control" name="country" id="country">
    <option value="">Select Country</option>
    @foreach (var country in ViewBag.countryList)
    {
        <option @((country.CountryCode == "GB") ? "selected" : "") value="@country.CountryCode">@country.CountryName</option>
    }
</select>

My Country Model Class

public class Country
{
    public long CountryId { get; set; }
    public string CountryCode { get; set; }
    public string CountryName { get; set; }
}

For ViewBar.countryList i add like this

List<Country> countryList = Common.getCountry();
ViewBag.countryList = JsonConvert.SerializeObject(countryList);

Please check in below image i already got data in variable but i also get error as above.

`public class Country { public long CountryId { get; set; } public string CountryCode { get; set; } public string CountryName { get; set; } }` — Paresh Maghodiya, Jul 25 '17 at 13:50
i add `ViewBag.countryList` add using list Please check updated post. — Paresh Maghodiya, Jul 25 '17 at 13:57
Ideally, you want to use strongly type ViewModel with DropDownList Html Helper. You might want to look at [this answer](https://stackoverflow.com/a/37819577/296861). — Win, Jul 25 '17 at 14:16
@PareshMaghodiya Replace `var` with `Country` - I'm betting that, because you are using the `ViewBag`, the type information is not carrying over and the `var` is typing it to something it's not. (Like a `char`, as named in the error.) — Der Kommissar, Jul 25 '17 at 15:04
I also used `Country` in place of var but also get same error — Paresh Maghodiya, Jul 25 '17 at 15:08
@PareshMaghodiya Have you verified that `country` contains what you expect it to contain in the loop body? — Der Kommissar, Jul 25 '17 at 15:11

The One · Answer 1 · 2017-07-25T14:31:45.790

1

List<Airport> airportCodeList = Common.getAirport();
ViewBag.airportCodeList = JsonConvert.SerializeObject(airportCodeList);

Should be

List<Airport> airportCodeList = Common.getAirport();
ViewBag.countryList= JsonConvert.SerializeObject(airportCodeList);

Don't use the ViewBag for this, use a strongly typed model, also use DropDownList Html Helper as in the other answer

Also, why do you serialize it? Just assign the objects

ViewBag.countryList= airportCodeList;

edited Jul 25 '17 at 14:31

answered Jul 25 '17 at 14:18

The One

4,560
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I give wrong list code please check new update in question – Paresh Maghodiya Jul 25 '17 at 14:22

score 0 · Answer 2 · answered Jul 25 '17 at 14:16

0

Why don't you use like this

  List<Airport> airportCodeList = Common.getAirport();
    ViewBag.airportCodeList = airportCodeList;

    @Html.DropDownListFor(x => x.ID, new SelectList(ViewBag.airportCodeList, "ID", "Name"))

answered Jul 25 '17 at 14:16

Ravikumar

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The given key was not present in the dictionary. in Razorview

2 Answers2