Question

我在数据库上有2个表tblcustomer和tblphone。我在tblphone中有两个属性（Brand和Model）。我正在使用mvc5创建新客户。我在视图中有2个Dropdownlist，并且我想在Dropdown1（Brand）更改时更改Dropdown2（模型）值。我已经实现了此代码，但是在按下Submit按钮dropdown2时没有返回通过JSON方法发送的Phone_Fk字段。请检查代码并更正错误

我认为我在Dropdown或Script查询中都犯了一些错误。

我的观点

            @Html.Label("Brand", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.DropDownListFor(model => model.Com, new SelectList(ViewBag.Brand),"--Select Brand--")
                @Html.ValidationMessageFor(model => model.Com,"", new { @class = "text-danger" })
            </div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.Phone_Fk, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.DropDownListFor(model => model.Phone_Fk, new SelectList(" "), "--Select Model--")
                @Html.ValidationMessageFor(model => model.Phone_Fk, "", new { @class = "text-danger" })
            </div>
        </div>

脚本

<script src="~/scripts/jquery-1.10.2.js"></script>
<script >
    $(document).ready(function () {
        $("#Com").change(function () {
            $.get("/Customer/getmodelList", { Com: $("#Com").val() }, function (data) {
                $("#Phone_Fk").empty();
                $.each(data, function (index, row) {
                    $("#Phone_Fk").append("<option value='" + row.Phone_Fk + "'>" + row.model_name + '</option>')
                });
            });
        })
    });
</script>

控制器

  public JsonResult getmodelList(string Com)
        {
            db.Configuration.ProxyCreationEnabled = false;
            var list = db.Phonedetails.Where(x => x.Com_nam == Com).Select(x => new { x.Phoneid, x.model_name }).ToList();
            return Json(list, JsonRequestBehavior.AllowGet);
        }
        // POST: Customer/Create
        [HttpPost]
        public ActionResult Create(myappCustomer p)
        {
            try
            {

                if (ModelState.IsValid)
                {
                    d.createcus(p);
                    return RedirectToAction("Index");
                }

我想要在dropdown2中选择的模型的ID，但是ID即将为0。

下拉菜单未返回正确的必需ID。代码更正

0 个答案: