Gain access to DataValueField Mvc method code behind how

[David]

I am about to plan a purchase with a  new customer again for the suite and I am using the latest demo. I was trying to get the value from the form that I placed my control in. I need to gain access in this field  .DataValueField("Id") which would be bound to the form when its posted but when I access tag item its null
  

<form asp-action="LinkToCase" asp-controller="MISObjects">

 

<div class="row">

    <div class="col-md-12">

        <div class="card card-success">

 

            <div class="card-header" style="background-color:#1e3f5a;color:white">

                <h3 class="card-title">Search and Tag</h3>

            </div>

            <div class="card-body">

 

                <div class="col-md-12">

                    <div class="input-group">

                        <select id="searchOptions" name="searchOptions" style="background-color: #1e3f5a; color: white; width: 140px; height: 45px">

                            <option selected value="1">Poi</option>

                            <option selected value="1">Vessel</option>

                        </select>

 

 

                        @(Html.Kendo().MultiColumnComboBox()

                            .Name("tagItem")

                            .DataTextField("name")

                            .DataValueField("Id")

                            .Filter("contains")

                            .FilterFields(new string[] { "name", "ContactTitle", "CompanyName", "Country" })

                            .Columns(columns =>

                            {

                                columns.Add().Field("name").Title("Contact Name").Width("200px");

                                columns.Add().Field("dob").Title("Date Of Brith").Width("200px");

 

                            })

                            .FooterTemplate("Total #: instance.dataSource.total() # items found")

                            .HtmlAttributes(new { style = "width:80%;" })

                            .Height(400)

                            .DataSource(source => source

                                .Custom()

                                .Transport(transport => transport

                                    .Read(read =>

                                    {

                                        read.Action("SearchQuery", "MISObjects")

                                            .Data("onAdditionalData");

                                    }))

                            )

                            )

                        <button class="btn-primary" value="Link To Case" style=" background-color:#1e3f5a;color:white">Link To Case</button>

 

                    </div>

                    

                    <script>

                        function onAdditionalData() {

                            return {

                                text: $("#customers").val()

                            };

                        }

                    </script>

  public IActionResult LinkToCase(int tagItem, string sesearchOptionsr) {
            Int32.TryParse(TempData.Peek("CaseId").ToString(), out int resultCaseId);

            POI newPoi = new POI();
            newPoi =  _context.Pois.SingleOrDefault(w => w.Id == tagItem);

            newPoi.MISObjectId = resultCaseId;

            _context.Pois.Add(newPoi);

            _toast.AddSuccessToastMessage(
                $"You have linked {newPoi.FirstName} {newPoi.LastName} to case {resultCaseId:d8}");

            return RedirectToAction("Edit", new { id = resultCaseId });
}

 

[Ivan Danchev]

Hello David,

I tested the scenario and did not come across any issues with regard to accessing the selected item's id in the LinkToCase action through the tagItem parameter, see the attached screenshot.

I am also attaching a sample project I used to check the behavior in. I've made some small modifications to the MultiColumnComboBox you posted - changed the "name" and "dob" fields to start with capital letters, to match the fields in the model, and also fixed fixed the name of the other parameter in the LinkToCase  action - from "sesearchOptionsr" to "searchOptions". Also the name of the controller in the example is Home instead of MISObjects.

I hope the example would help you identify the issue in your logic.

Regards,
Ivan Danchev
Progress Telerik

[David]

Thats odd I will have a look at sample now I am using .net core 3.1 weather or not that makes a difference thanks for providing a sample

[David]

In mine they to be lower case for some reason or the json will not be found.

[David]

Found my issue it was down to this. Being missing every new project i keep forgetting about it and it comes back to bite me in the ass lol thanks.

.AddNewtonsoftJson(options => options.SerializerSettings.ContractResolver = new DefaultContractResolver());

 

[quote]

Ivan Danchev said:

Hello David,

I tested the scenario and did not come across any issues with regard to accessing the selected item's id in the LinkToCase action through the tagItem parameter, see the attached screenshot.

I am also attaching a sample project I used to check the behavior in. I've made some small modifications to the MultiColumnComboBox you posted - changed the "name" and "dob" fields to start with capital letters, to match the fields in the model, and also fixed fixed the name of the other parameter in the LinkToCase  action - from "sesearchOptionsr" to "searchOptions". Also the name of the controller in the example is Home instead of MISObjects.

I hope the example would help you identify the issue in your logic.

Regards,
Ivan Danchev
Progress Telerik

[/quote]

[David]

It might be worth adding that in the install guide it has been a bug bare in me for a long time since your components require it to be normal case and not pascal case

[David]

I also have a column called which i would like to capture but again same issue comming blank

  columns.Add().Field("SearchType").Title("Type").Width("200px");
                                

 

[quote]Ivan Danchev said:

Hello David,

I tested the scenario and did not come across any issues with regard to accessing the selected item's id in the LinkToCase action through the tagItem parameter, see the attached screenshot.

I am also attaching a sample project I used to check the behavior in. I've made some small modifications to the MultiColumnComboBox you posted - changed the "name" and "dob" fields to start with capital letters, to match the fields in the model, and also fixed fixed the name of the other parameter in the LinkToCase  action - from "sesearchOptionsr" to "searchOptions". Also the name of the controller in the example is Home instead of MISObjects.

I hope the example would help you identify the issue in your logic.

Regards,
Ivan Danchev
Progress Telerik

[/quote]

[Ivan Danchev]

David,

I'm glad you've found the issue to be related to JSON serialization and made the necessary changes to the project's configuration.

We have covered the configuration needed for maintaining the casing of the properties in the JSON Serialization documentation section: https://docs.telerik.com/aspnet-core/compatibility/json-serialization#overview

As for the issue you are having with a column value not being sent to the controller, the MultiColumnComboBox sends only its DataValueField value ("Id" in this case). If you want to send any other field value you should do it through other means. For example saving the column value with js in a hidden field nested in the form and then accessing that value in the action after the form is submitted.

Regards,
Ivan Danchev
Progress Telerik