ASP.NET

@ModelType jTableSampleDatabaseLayer.Hik.JTable.Models.Concour

@Code
ViewData("Title") = "Filtering"
End Code


@section CssImport
<style>
    div.filtering {
        border: 1px solid #999;
        margin-bottom: 5px;
        padding: 10px;
        background-color: #EEE
    }
</style>
 end section

<div class="filtering">
<form>
    <label>Numéro: <input type="text" name="numero" id="numero" />
          <label> Type: @Html.DropDownList("numero_type", DirectCast(ViewBag.types,    IEnumerable(Of SelectListItem)), New With { .id = "numero_type" })
           Nature: @Html.DropDownList("numero_nature", DirectCast(ViewBag.natures, IEnumerable(Of SelectListItem)), New With { .id = "numero_nature" })</label></label>


    <button type = "submit" id="LoadRecordsButton">Rechercher</button>
  </form>
 </div>

 <div id="Tableau" ></div>
    <script >

   $(document).ready(function () {

    //Initialize jTable
    $('#Tableau').jtable({
        title: 'Liste des concours',


        actions: {

            listAction: '@Url.Action("ConcoursListByFiter")',
            deleteAction: '@Url.Action("DeleteConcours")',
            updateAction: '/DefaultPage/UpdateConcours',
            createAction: '@Url.Action("CreateConcours")'
        },

        fields: {
            numero_concours: {
                title: 'numéro',
                width: '21%',
                key: true,
                create: true,
                edit: false,
                columnResizable: true,
                columnSelectable: true
            },     

            numero_type: {
                title: 'type',
                width: '12%',
                options: '@Url.Action("GetTypeOptions")'
            },
            numero_nature: {
                title: 'nature',
                options: '@Url.Action("GetNatureOptions")',
                width: '21%'
            },

            numero_etape: {
                title: 'Etape',
                options: { '1': 'En cours de programmation', '2': 'soumission', '3':      'validé', '4': 'sorti' },
                width: '21%'
            },
            titre_concours: {
                title: 'titre',
                width: '21%'
            },
            date_de_sortie: {
                title: 'date ',
                width: '21%',
                type: 'date',
                displayFormat: 'yy-mm-dd',
                inputClass: 'validate[required,custom[date]]'
            },
            nbre_rangs: {
                title: 'Rang',
                width: '21%'
            },
            nbre_matchs: {
                title: 'Matchs',
                width: '21%'
            }
        }

    });
    //Re-load records when user click 'load records' button.       

    $('#LoadRecordsButton').click(function (e) {
        e.preventDefault();
        $('#Tableau').jtable('load', {
            numero: $('#numero').val(),
            typeId: $('#numero_type').val(),
            natureId: $('#numero_nature').val()

        });
    });

    //Load all records when page is first shown
    $('#LoadRecordsButton').click();



});
  </script>

<HttpPost>
    Public Function UpdateConcours(concours As Concour) As JsonResult
        If (Not (ModelState.IsValid)) Then

            Return Json(New With {Key .Result = "ERROR", Key .Message = "Form is not valid! Please correct it and try again."})
        End If
        Try


            _repository.ConcoursRepository.UpdateConcours(concours)
            Return Json(New With {Key .Result = "OK"})

        Catch ex As Exception

            Return Json(New With {Key .Result = "ERROR", Key .Message = ex.Message})
        End Try
    End Function

Public Sub UpdateConcours(concours As Concour) Implements IConcoursRepository.UpdateConcours
        Dim foundConcours As Concour = _dataSource.Concours.FirstOrDefault(Function(s) s.numero_concours = concours.numero_concours)
        If IsNothing(foundConcours) Then

            Return
        End If
        foundConcours.numero_concours = concours.numero_concours
        foundConcours.nbre_matchs = concours.nbre_matchs
        foundConcours.nbre_rangs = concours.nbre_rangs
        foundConcours.numero_etape = concours.numero_etape
        foundConcours.date_de_sortie = concours.date_de_sortie
        foundConcours.numero_type = concours.nbre_rangs
        foundConcours.titre_concours = concours.titre_concours
        foundConcours.numero_nature = concours.numero_nature
        Dim e As Concour = (From o In x.Concours Where o.numero_concours = concours.numero_concours Select o).First()
        x.Entry(e).OriginalValues().SetValues(concours)
        x.ChangeTracker.DetectChanges()
        x.SaveChanges()



    End Sub

I'm working on a dynamic data website with linqtosql dbml file. Could anyone please help in giving some examples on how to update records displayed in a formview that allows paging? The formview exists in the "Edit.aspx" page with DefaultMode="Edit" and DataSourceID="DetailsDataSource" where "DetailsDataSource" is a LinqDataSource with EnableUpdate="true". The bottomrow of the formview contains a LinkButton with CommandName="Update" to perform the update operation. Once I change some info in the bounddatafieds and then click on the linkbutton, the formview loads with empty datafields and no updates are saved to the database.

Any help will be much appreciated.

Thank you.