使用TELERIK

Question

3天前我开始学习ASP.NET和telerik，我需要一些关于级联下拉列表的帮助，我真的无法检测到问题的根源，我需要帮助。

以下是代码

以下是观点：

@(Html.Kendo().DropDownList()
              .Name("months")
              .HtmlAttributes(new { style = "width:100%" })
              .OptionLabel("Select month...")
              .DataTextField("MonthName")
              .DataValueField("MonthID")
              .DataSource(source =>
              {
                  source.Read(read =>
                  {
                      read.Action("GetCascadeMonths", "Home")
                          .Data("filterMonths");
                  })
                  .ServerFiltering(true);
              })
              .Enable(false)
              .AutoBind(false)
              .CascadeFrom("years")
)
<script>
            function filterMonths() {
                return {
                    years: $("#years").val()
                };
            }
</script>

这是控制器：

   public ActionResult GetCascadeMonths(int YearCode)
        {
            IQueryable months = Month.GetMonths().Where(x => x.YearCode == YearCode);

            if (HttpContext.Request.IsAjaxRequest())
                return Json(
                                months,
                                JsonRequestBehavior.AllowGet
                            );

            return View(months);
        }

这是模型：

public class Month
{
    public int YearCode { get; set; }
    public int MonthID { get; set; }
    public String MonthName { get; set; }

    public static IQueryable<Month> GetMonths()
    {
        return new List<Month>
        {
            new Month
                {
                    YearCode = 1,
                    MonthID=1,
                    MonthName = "January"
                },
            new Month
                {
                    YearCode = 1,
                    MonthID=2,
                    MonthName = "February"
                },
            new Month
                {
                    YearCode = 1,
                    MonthID=3,
                    MonthName = "March"
                },
            new Month
                {
                    YearCode = 1,
                    MonthID=4,
                    MonthName = "April"
                },
            new Month
                {
                    YearCode = 1,
                    MonthID=5,
                    MonthName = "May"
                },
            new Month
                {
                    YearCode = 1,
                    MonthID=6,
                    MonthName = "June"
                }
        }.AsQueryable();
    }
}

如果您有任何想法，请告诉我。 提前谢谢。