[Solved] Editor Template with Telerik.ComboBox - Required field is always showing even with value

[Al Jeffrey]

I have an Editor template with Telrik.ComboBox. The comboBox is populated correctly and I can select from the list but when I click OK, even there is selected item, it keeps on giving me the validation error that my ITEM field is required. 

MODEL

[ScaffoldColumn(false)]
public decimal ItemID { get; set; }

[DisplayName("Item")]
[UIHint("ClientItemLookUp"), Required]
public string ItemName { get; set; }

VIEW

<%= Html.Telerik().Grid<PrDetailEntity>()
    .Name("itemList")
    .ToolBar(commands => commands.Insert().ButtonType(GridButtonType.Image))
    .DataKeys(keys =>
    {
        keys.Add(c => c.ItemID);
    })
    .DataBinding(dataBinding =>
    {
        dataBinding.Ajax()
            .Select("_SelectAjaxEditing", "Prentry")
            .Insert("_InsertAjaxEditing", "Prentry")
            .Update("_SaveAjaxEditing", "Prentry")
            .Delete("_DeleteAjaxEditing", "Prentry");
    })
    .Columns(columns =>
    {
        columns.Bound(o => o.ItemID).Width(50).Hidden(true);
        columns.Bound(o => o.ItemName);
        columns.Bound(o => o.ItemDescription);
        columns.Bound(o => o.Quantity).Width(100);
        columns.Bound(o => o.Uom).Width(100);
        columns.Bound(o => o.QuantityCost).Width(100);
        columns.Bound(o => o.ItemCost).Width(100);
        columns.Command(commands =>
        {
            commands.Edit().ButtonType(GridButtonType.Image);
            commands.Delete().ButtonType(GridButtonType.Image);
        }).Width(180).Title("Commands");

    })
    .Editable(
        editing => editing.Mode(GridEditMode.PopUp)
            .TemplateName("test")
            )
    .Footer(false)
%>

ClientItemLookUp.ascx

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<dynamic>" %>

<%= Html.Telerik().ComboBox()
    .Name("ItemList")
    .AutoFill(false)
    .HighlightFirstMatch(true)
    .HtmlAttributes(new { style = "width: 300px; " })
    .DataBinding(binding => binding.Ajax()
                                .Select("_GetVendorByName", "Entry")
                                .Delay(400)
                                .Cache(false)
    )
    .Filterable(filtering =>
    {
        filtering.FilterMode(AutoCompleteFilterMode.Contains);
        filtering.MinimumChars(1);
    })
 %>

Validation

Item

select

 The Item field is required

[Georgi Krustev]

Hi Al Jeffrey,

 I am not sure where could be the problem. Here is a test project which I have created in my attempt to reproduce depicted issue. It is attached to this message.

Best wishes,
Georgi Krustev
the Telerik team