Reordering - C1 ASP.NET MVC

// This file locates: "Scripts/Lesson/C1FlexGrid/ColumnsDropTargetControl.js".
c1.documentReady(function () {
    var theGrid = wijmo.Control.getControl('#theGrid');
    var theColumn=null;
 
    // prevent 'sales' column from being dragged to index 0
    theGrid.draggingColumn.addHandler(function (s, e) {
        theColumn = s.columns[e.col].binding;
    });
    theGrid.draggingColumnOver.addHandler(function (s, e) {
        if (theColumn == 'Country') {
            if (e.col == 0 || e.col == s.columns.length - 1) {
                e.cancel = true;
            }
        }
    });
});

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

@model IEnumerable<FlexGridData.Sale>
 
<h1>
    @Html.Raw(Resources.C1FlexGrid.ColumnsDropTargetControl_Title)
</h1>
<p>
    @Html.Raw(Resources.C1FlexGrid.ColumnsDropTargetControl_Text1)
</p>
<p>
    @Html.Raw(Resources.C1FlexGrid.ColumnsDropTargetControl_Text2)
</p>
<p>
    @Html.Raw(Resources.C1FlexGrid.ColumnsDropTargetControl_Text3)
</p>
@Html.C1().FlexGrid().Id("theGrid").Bind(Model)

Drop Target Control