如何使用数据库将我的下拉选择值保存在数据库中？

如何解决如何使用数据库将我的下拉选择值保存在数据库中？

控制器

public ActionResult ItemInsert()
        {
            ViewBag.Category = new SelectList(db.CategoryMasters.ToList(),"CategoryId","CategoryName");
            Itemviewmodel item = new Itemviewmodel();
            return PartialView(item);
        }

查看

<div class="form-group">
            @Html.LabelFor(model => model.CategoryId,htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                    @Html.DropDownList("Category",ViewBag.Category as SelectList,new { @id = "catagory" })
                    @Html.ValidationMessageFor(model => model.CategoryId,"",new { @class = "text-danger" })
            </div>
        </div>

如何使用javascript保存下拉列表值？

解决方法

查看

<div class="form-group">
            @Html.LabelFor(model => model.CategoryId,htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
               <div hidden>@Html.EditorFor(model => model.CategoryId,new { htmlAttributes = new { @class = "form-control",id = "categoryid" } })</div>
                    @Html.DropDownList("any value",ViewBag.category as SelectList,"--SELECT--",new { @id = "category" })
                    @Html.ValidationMessageFor(model => model.CategoryId,"",new { @class = "text-danger" })
            </div>
        </div>

JS

<script type="text/javascript">
    $(document).ready(function () {
        $("#category").change(function () {
            var value = $(this).val();
            alert(+value)
            $("#categoryid").val(value);
        });
    });
</script>