Grouping - C1 ASP.NET MVC

// This file locates: "Scripts/Lesson/C1FlexGrid/Grouping.js".
c1.documentReady(function () {
    // basic grouping
    var theGrid = wijmo.Control.getControl('#theGrid');
    theGrid.collectionView.groupDescriptions.push(new wijmo.collections.PropertyGroupDescription("Country"));
    theGrid.collectionView.groupDescriptions.push(new wijmo.collections.PropertyGroupDescription("Product"));
 
    // select first item (after sorting/grouping)
    theGrid.select(new wijmo.grid.CellRange(0, 0), true);
 
    var theGridHideCols = wijmo.Control.getControl('#theGridHideCols');
    theGridHideCols.getColumn('Country').visible = false;
    theGridHideCols.getColumn('Product').visible = false;
    theGridHideCols.collectionView.groupDescriptions.push(new wijmo.collections.PropertyGroupDescription("Country"));
    theGridHideCols.collectionView.groupDescriptions.push(new wijmo.collections.PropertyGroupDescription("Product"));
 
    // select first item (after sorting/grouping)
    theGridHideCols.select(new wijmo.grid.CellRange(0, 2), true);
});

using System.Web.Mvc;
 
namespace LearnMvcClient.Controllers
{
    public partial class C1FlexGridController : Controller
    {
        // GET: Grouping
        public ActionResult Grouping()
        {
            return View(Models.FlexGridData.GetSales(200));
        }
    }
}

@model IEnumerable<FlexGridData.Sale>
 
<h1>
    @Html.Raw(Resources.C1FlexGrid.Grouping_Title)
</h1>
<p>
    @Html.Raw(Resources.C1FlexGrid.Grouping_Text1)
</p>
<p>
    @Html.Raw(Resources.C1FlexGrid.Grouping_Text2)
</p>
<p>
    @Html.Raw(Resources.C1FlexGrid.Grouping_Text3)
</p>
@Html.C1().FlexGrid().Id("theGrid").Bind(Model).OrderBy("Country", "Product").Height(250)
 
<p>
    @Html.Raw(Resources.C1FlexGrid.Grouping_Text4)
</p>
<p>
    @Html.Raw(Resources.C1FlexGrid.Grouping_Text5)
</p>
@(Html.C1().FlexGrid().Id("theGridHideCols").Height(250)
    .AutoGenerateColumns(false)
    .Bind(Model)
    .Columns(cs=>
    {
        cs.Add().Binding("Country").Header("Country");
        cs.Add().Binding("Product").Header("Product");
        cs.Add().Binding("Downloads").Header("Downloads");
        cs.Add().Binding("Sales").Header("Sales");
        cs.Add().Binding("Expenses").Header("Expenses");
    })
    .OrderBy("Country", "Product")
)