使用MVC框架怎么实现一个下拉框联动效果？相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。
@using (Html.BeginForm("aaai003sch", "aaa", FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
{
@Html.AntiForgeryToken()
@Html.LabelFor(m => m.dept, new { @class = "col-sm-2 control-label" })
@Html.DropDownListFor(model => model.dept, Model.deptlist, new { @class = "form-control select2 ", style = "width: 100%;" })
@Html.ValidationMessageFor(m => m.dept, "", new { @class = "text-danger" })
当部门变动的时候,职位也相应改变:
//根据城市获取酒店
$("#dept").change(function () {
var url = rootUrl + "aaa/GetJobByDept";
var dept = $(this).val(); //获取部门的值
var job = $("#job");
job.empty(); //清空当前职位的值
//这句很重要，因我们用的是select2插件，若没有用这个插件可以去掉这句
job.select2('val', '');
$.ajax({
cache: false,
type: "GET",
url: url,
data: { "Dept": dept},
success: function (data) {
$.each(data, function (id, option) {
job.append($('').val(option.Id).html(option.Name));
});
job.trigger('change');
},
error: function (xhr, ajaxOptions, thrownError) {
toastr["error"]("请选择部门");
}
});
});执行js里的URL,这个程式写在控制器里:
[Description("根据部门获取职位")]
[AcceptVerbs(HttpVerbs.Get)]
[LoginAllowView]
public ActionResult GetJobByDept(string dept)
{
if (String.IsNullOrEmpty(dept))
{
throw new ArgumentNullException("dept");
}
StringBuilder sb = new StringBuilder();
sb = new StringBuilder();
sb.Append(" SELECT jobid,jobname ");
sb.Append(" FROM job_file ");
sb.Append(" LEFT JOIN dept_file ON jobdept = deptid ");
sb.AppendFormat(" WHERE deptid='{0}'", dept);
DataTable dt = sqlHelper.getData(sb.ToString());
var result = dt.AsEnumerable().Select(row => new Item
{
Name = Utils.ObjToStr(row["jobname"]),
Id = Utils.ObjToInt(row["jobid"], 0)
}).ToList();
return Json(result, JsonRequestBehavior.AllowGet);
}看完上述内容，你们掌握使用MVC框架怎么实现一个下拉框联动效果的方法了吗？如果还想学到更多技能或想了解更多相关内容，欢迎关注创新互联行业资讯频道，感谢各位的阅读！
