public ActionResult Index()
        {
            TestViewModel vm = new TestViewModel();

            var testItems = new List<TestItem>();
            testItems.Add(new TestItem {Id = 1, Name = "Name"});

            vm.TestItems = testItems;

            return View(vm);
        }
 public ActionResult ExportSerialNumbers(TestViewModel vm)
 {
     var testItems = new List<TestItem> {new TestItem {Id = 1, Name = "Name"}};
     return ExcelExporter<TestItem>.Export(testItems.AsQueryable(), null, "TestItems");
 }