[Solved] combobox in a grid

[José Luis]

Hello, sorry for my english, I´m spanish. I use MVC 3 razor aps.net in my project.
How I can place a combobox in a grid to edit the registry to show me the field values ​​in the combobox?

I want that when I click on Edit, in the popup, the values ​​of the field take a combobox that is populated table in my database

SEE atach picture

this is my grid

 @(Html.Telerik().Grid(Model)
        .Name("Grid")
        .Resizable(resizing => resizing.Columns(true))
        .Reorderable(reorder => reorder.Columns(true))
        .Sortable(sorting => sorting
                    .OrderBy(sortOrder => sortOrder.Add(o => o.id).Ascending())
        )
        .ToolBar(commands => commands.Insert())
            .DataKeys(keys => keys.Add(c => c.id))
        .DataBinding(dataBinding => dataBinding
            .Server()
                                   .Select("Index", "agendassustitucion")
                                   .Insert("Insertar", "agendassustitucion")
                                   .Update("Editar", "agendassustitucion")
                                   .Delete("Eliminar", "agendassustitucion"))

        .Columns(columns =>
        {
            columns.Bound(o => o.fechasolicitud).Width(10).Title("Solicitada el");
            columns.Bound(o => o.mZona.descripcion).Width(100).Title("Zona");
            columns.Bound(o => o.mCentro.descripcion).Width(100).Title("Centro");
            columns.Bound(o => o.profesional).Width(100).Title("Profesional");
            columns.Bound(o => o.solicitadapor).Width(100).Title("Solicitante");
            columns.Bound(o => o.medio).Width(50).Title("Medio");
            columns.Bound(o => o.incidencia).Width(10).Title("Incidencia");
            columns.Bound(o => o.fechas).Width(90).Title("Fechas");
            columns.Command(commands =>
            {
                commands.Edit();
                commands.Delete();
            }).Width(110).Title("Acciones");
        })
        .Editable(editing => editing.Mode(GridEditMode.PopUp))
        .Pageable()    
        .Localizable("es-ES")      
        .Filterable()
)


this is my combobox

@(Html.Telerik().ComboBox()
                .Name("AjaxZonas")
                .AutoFill(true)
                                .DataBinding(binding => binding.Ajax().Select("_AjaxZonas", "incidencia"))
                .Filterable(filtering =>
                {
                    filtering.FilterMode(AutoCompleteFilterMode.StartsWith);
                })
                .HighlightFirstMatch(true)
        )



this is a part of the controller

//--------------------------------------------------------------------------------------------
// Para cargar el combobox con las zonas básicas
//--------------------------------------------------------------------------------------------
        
        [HttpPost]
        public ActionResult _AjaxZonas(string text)
        {
            using (entities)
            {
                var zonas = entities.mZona.AsQueryable();
                if (text.HasValue())
                {
                    zonas = zonas.Where((p) => p.descripcion.StartsWith(text));
                }
                return new JsonResult { Data = new SelectList(zonas.ToList(), "codigo", "descripcion") };
            }
        }
        [HttpPost]
        public ActionResult _AutoCompleteAjaxZonas(string text)
        {
            using (entities)
            {
                var zonas = entities.mZona.AsQueryable();
                if (text.HasValue())
                {
                    zonas = zonas.Where((p) => p.descripcion.StartsWith(text));
                }
                return new JsonResult { Data = zonas.Select(p => p.descripcion).ToList() };
            }
        }