CODEWITHSUNDEEP
c#ajaxenums
Tina
Tina

Reputation: 89

error using enum for displaying data

The view appears for a second and then the following error gets thrown-

The parameters dictionary contains a null entry for parameter 'sortField' of non-nullable type 'Project.Enumerators.SortResultEnum' for method 'System.Threading.Tasks.Task1[System.Web.Mvc.ActionResult] Details(Project.Enumerators.SortResultEnum, System.Web.Helpers.SortDirection, System.String, System.Nullable1[System.Int32])' in 'Project.Controllers.SearchController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters

I have a form which is making an ajax call and later ajax call forwards it to controller.

Ajax call:

$(document).on('submit', '#SearchForm', function () {
var $form = $(this);
var $searchString = $("#SearchString").val();
var $sortField = $form.attr("data-sortOrder");
var $sortDirection = $form.attr("data-sortDirection");

SortResults($sortField, $sortDirection, $searchString);
});

Form:

 <form id="SearchForm" action="@Url.Action("Details", "Search")" method="get" data-ajax="true" data-sortOrder="@SortResultEnum.ClientName" data-sortDirection="@SortDirection.Ascending">

   @Html.TextBox("SearchString", ViewBag.CurrentSearchString as string, new { id = "SearchString", @class = "form-control", placeholder = "" })
  <span class="input-group-btn">
       <button class="btn btn-primary" type="submit" id="search-btn"><i class="glyphicon glyphicon-search"></i></button>
   </span>

        </form>

Controller Action is like

public async Task<ActionResult> Details(SortResultEnum sortField,SortDirection sortDirection, string searchString,  int? page)
 {
     //code to call service and get result is here
    // partial view is being used to display data

}

Can someone please help me with this error. Thanks.

Upvotes: 0

Views: 106

Answers (1)

Ujwal Neupane
Ujwal Neupane

Reputation: 65

I think you missed "" in data-sortOrder. Try this.

  data-sortOrder="@SortResultEnum.ClientName"

Upvotes: 1

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