Question

@ { ViewBag.Title =“索引”; Layout = null; }

<h2>Index</h2>


<!DOCTYPE html>

<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Country State City Bind </title>
<script src="~/Scripts/jquery-1.7.1.js"></script>
<script type="text/javascript">
$(function ()
{

//******* code for state bind with countryid…………..

    $("#ddlcountry").change(function () {
        //debugger;
        //$(this).closest('tr').remove();
        var v2 = $(this).val();
        $.get("DropdownTest/StateBind", { country: v2 }, function (data) {
            $("#state").empty();
            var v = "<option>Select</option>";
            $.each(data, function (i, v1) {
                v += "<option value='" + v1.Value + "'>" + v1.Text + "</option>";
            });
            $("#state").html(v);
        });
    });

//******* code for city bind with stated……………………

$("#state").change(function () {
var v2 = $(this).val();
$.get("DropdownTest/CityBind", { state: v2 }, function (data) {
$("#city").empty();
var v = "<option>Select</option>";
$.each(data, function (i, v1) {
v += "<option value='" + v1.Value + "'>" + v1.Text + "</option>";
});
$("#city").html(v);
});
});
});
</script>
</head>

<body>
<div>
<table>
<tr><td colspan="2"><font color="Red">Bind Json Result to DropDownlist in MVC4 Country State City Concept</font></td></tr>
<tr><td>Country Name</td><td>@Html.DropDownList("ddlcountry", "Select" )</td></tr>
<tr><td>State Name</td><td><select id="state"><option>Select</option></select></td></tr>
<tr><td>City Name</td><td><select id="city"><option>Select</option></select></td></tr>

</table>
</div>
</body>
</html>

在这里输入代码

使用System; 使用System.Collections.Generic; 使用System.Linq; 使用System.Web; 使用System.Web.Mvc;

使用MVCDropdownlist.Dal;

命名空间MVCDropdownlist.Controllers { 公共类DropdownTestController：Controller { // // GET：/ DropdownTest /

    harshalEntities ctx = new Dal.harshalEntities();



    public ActionResult Index()
    {
        ViewBag.ddlcountry = CountryBind();
        return View();

    }

    //code for bind Country Name...........................
    public List<SelectListItem> CountryBind()
    {
        List<SelectListItem> li = new List<SelectListItem>();
        foreach (var v in ctx.Countries)
        {
            li.Add(new SelectListItem { Text = v.CountryName, Value = v.CountryId.ToString() });
        }

        //ViewBag.ddlcountry = li;
        //return View();
        return li;

    }

    //code for bind State Name...........................
    public JsonResult StateBind(string country)
    {

        int id = Convert.ToInt32(country);
        var v = ctx.States.Where(m => m.CountryId == id).Select(m => new { Text = m.StateName, Value = m.StateId });
        return Json(v, JsonRequestBehavior.AllowGet);

    }

    //code for bind City Name...........................
    public JsonResult CityBind(string state)
    {

        int id = Convert.ToInt32(state);
        var v = ctx.Cities.Where(m => m.StateId == id).Select(m => new { Text = m.CityName, Value = m.CityId });
        return Json(v, JsonRequestBehavior.AllowGet);

    }
}

}

我的功能不在里面获取方法

我的javascript代码无法正常工作（调试器没有进入get方法）

0 个答案: