Hello again,
I tried to make the Detail Template example from the local installed examples and it gives me this message

The following sections have been defined but have not been rendered for the layout page "~/Views/Shared/_Layout.cshtml": "HeadContent".

this is the cshtml

@{
    ViewBag.Title = "DetailGrid";
}

<h2>DetailGrid</h2>

@model IEnumerable<KendoUIMvcApplication2.ViewModels.EmployeeViewModel>

@{ Html.Kendo().Grid(Model)
    .Name("Employees")
    .Columns(columns =>
    {
        columns.Bound(e => e.FirstName).Width(140);
        columns.Bound(e => e.LastName).Width(140);
        columns.Bound(e => e.Title).Width(200);
        columns.Bound(e => e.Country).Width(200);
        columns.Bound(e => e.City);
    })
    .DetailTemplate(e =>
    {            
            Html.Kendo().TabStrip()
                    .Name("TabStrip_" + e.EmployeeID)
                    .SelectedIndex(0)
                    .Items(items =>
                    {
                        items.Add().Text("Orders").Content(@<text>
                                
                                @(Html.Kendo().Grid(e.Orders)
                                        .Name("Orders_" + e.EmployeeID)
                                        .Columns(columns =>
                                        {
                                            columns.Bound(o => o.OrderID).Width(101);
                                            columns.Bound(o => o.ShipCountry).Width(140);
                                            columns.Bound(o => o.ShipAddress).Width(200);
                                            columns.Bound(o => o.ShipName).Width(200);
                                            columns.Bound(o => o.ShippedDate).Format("{0:d}");
                                        })
                                        .Pageable()
                                        .Sortable()
                                )
                                
                        </text>);
                        items.Add().Text("Contact Information").Content(                                
                                @<div class="employee-details">                                    
                                    <ul>
                                        <li>
                                            <label>Birth Date:</label>@e.BirthDate.Value.ToString("d")
                                        </li>
                                        <li>
                                            <label>Country:</label>@e.Country
                                        </li>
                                        <li>
                                            <label>City:</label>@e.City
                                        </li>
                                        <li>
                                            <label>Address:</label>@e.Address
                                        </li>
                                        <li>
                                            <label>Home Phone:</label>@e.HomePhone
                                        </li>
                                    </ul>
                                </div>);                                                       

                    })
                    .Render();
    })
    .RowAction(row =>
    {
        if (row.Index == 0)
        {
            row.DetailRow.Expanded = true;
        }
    })
    .Pageable()
    .DataSource(dataSource => dataSource.Server().PageSize(5))
    .Sortable()
    .Render();
}

@section HeadContent {
    <style scoped="scoped">
        .employee-details ul
        {
            list-style:none;
            font-style:italic;
            margin-bottom: 20px;
        }

        .employee-details label
        {
            display:inline-block;
            width:90px;
            font-style:normal;
            font-weight:bold;
        }
    </style>

@(Html.Kendo().Grid<Kendo.Mvc.Examples.Models.EmployeeViewModel>()
    .Name("Employees")
    .Columns(columns =>
    {
        columns.Bound(e => e.FirstName).Width(140);
        columns.Bound(e => e.LastName).Width(140);
        columns.Bound(e => e.Title).Width(200);
        columns.Bound(e => e.Country).Width(200);
        columns.Bound(e => e.City);
    })
    .ClientDetailTemplateId("employeesTemplate")
    .Pageable()
    .DataSource(dataSource => dataSource
        .Ajax()
        .Read(read => read.Action("HierarchyBinding_Employees", "Grid"))
        .PageSize(5)
    )
    .Sortable()
    .Events(events => events.DataBound("dataBound"))
)

<script>
    function dataBound() {
        this.expandRow(this.tbody.find("tr.k-master-row").first());
    }
</script>

<script id="employeesTemplate" type="text/kendo-tmpl">
    @(Html.Kendo().TabStrip()
            .Name("TabStrip_#=EmployeeID#")
            .SelectedIndex(0)
            .Items(items =>
            {
                items.Add().Text("Orders").Content(@<text>
                    @(Html.Kendo().Grid<Kendo.Mvc.Examples.Models.OrderViewModel>()
                        .Name("Orders_#=EmployeeID#")
                        .Columns(columns =>
                        {
                            columns.Bound(o => o.OrderID).Width(101);
                            columns.Bound(o => o.ShipCountry).Width(140);
                            columns.Bound(o => o.ShipAddress).Width(200);
                            columns.Bound(o => o.ShipName).Width(200);
                        })
                        .DataSource(dataSource => dataSource
                            .Ajax()
                            .Read(read => read.Action("HierarchyBinding_Orders", "Grid", new { employeeID = "#=EmployeeID#" }))
                        )
                        .Pageable()
                        .Sortable()
                        .ToClientTemplate())
                </text>                        
                );
                items.Add().Text("Contact Information").Content(
                    "<div class='employee-details'>" +
                        "<ul>" +
                            "<li><label>Country:</label>#= Country #</li>" +
                            "<li><label>City:</label>#= City #</li>" +
                            "<li><label>Address:</label>#= Address #</li>" +
                            "<li><label>Home Phone:</label>#= HomePhone #</li>" +
                        "</ul>" +
                    "</div>"
                );                
            })
            .ToClientTemplate())
</script>

<script>
    function dataBound() {
        this.expandRow(this.tbody.find("tr.k-master-row").first());
    }
</script>

@section HeadContent {
    <style scoped="scoped">
	    .employee-details ul
        {
            list-style:none;
            font-style:italic;
            margin-bottom: 20px;
        }

        .employee-details label
        {
            display:inline-block;
            width:90px;
            font-style:normal;
            font-weight:bold;
        }
    </style>