[Solved] Cascading issue when submit form

[vinod]

@model AgencyFinder.WebSite.Models.TestViewModel
@{
    ViewBag.Title = "Index";
}
<link href="~/Content/Collaspable.css" rel="stylesheet" />
<div class="collapsibleContainer">
    <h2>Search </h2>
    @using (Html.BeginForm("Index", "Test", FormMethod.Get))
 {
        @using AgencyFinder.WebSite.Models;
@model Location
@(Html.Telerik().ComboBoxFor(x => x.CountryId).Name("Loc.CountryId")
    //.AutoFill(true)
    .CascadeTo("Loc_CityId")
    .BindTo(new SelectList(Model.CountryList, "CountryId", "Name"))
    .Value(Model.CountryId.ToString())
    .ClientEvents(events =>
    {
        //events.OnChange("Loc_CountryId_OnChange");
        //events.OnClose("Loc_CountryId_OnClose");
    })
    .SelectedIndex(-1)
)
@(Html.Telerik().ComboBoxFor(x => x.CityId).Name("Loc.CityId")
    .BindTo(new SelectList(Model.CityList, "CityId", "Name"))
    //.AutoFill(true)
    .DataBinding(binding =>
    {
        binding.Ajax().Select("GetCities", "Test");
    })
    .Value(Model.CityId.ToString())

    .ClientEvents(events =>
    {
        events.OnDataBinding("Loc_CityId_OnDataBinding");
        //events.OnLoad("Loc_CityId_OnLoad");

    })

)

        <input type="submit" value="submit" />
        <input type="button" value="reset" id="reset" />
        <div id="Resulsts">
        </div>
 }
</div>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using AgencyFinder.WebSite.Models;
namespace AgencyFinder.WebSite.Controllers
{
    public class TestController : Controller
    {
        //
        // GET: /Test/
        public static List<Person> Persons = new List<Person>()
        {
            new Person { Name="Vinod",Age=30,IsValid=true},
            new Person { Name="Nagi",Age=12,IsValid=true},
            new Person { Name="Ramesh",Age=33,IsValid=true},
            new Person { Name="Nishar",Age=44,IsValid=true},
            new Person { Name="Mohan",Age=55,IsValid=true},
            new Person { Name="Rohan",Age=53,IsValid=true},
            new Person { Name="Montu",Age=23,IsValid=true},
            new Person { Name="Banti",Age=5,IsValid=true},
            new Person { Name="Anuraj",Age=33,IsValid=true},
        };
        public static List<Country> Countries = new List<Country>()
        {
            new Country {CountryId=1, Name="One"},
            new Country {CountryId=2, Name="two"},
            new Country {CountryId=3, Name="three"},
            new Country {CountryId=4, Name="four"},
        };
        public static List<City> Cities = new List<City>()
        {
            new City {CityId=1, Name="One",CountryId=1},
            new City {CityId=2, Name="two",CountryId=1},
            new City {CityId=3, Name="three",CountryId=2},
            new City {CityId=4, Name="four",CountryId=1},
        };
        public ActionResult Index(TestViewModel test)
        {
            var lc =new Location();
            lc.CountryList=Countries;
            lc.CityList = Cities;
            test.Loc =lc;
            return View(test);
        }
        [HttpPost]
        public ActionResult GetCities(int Countryid)
        {
            var items=Cities.Where(x=> x.CountryId==Countryid).ToList();
            return Json(new SelectList(items, "CityId", "Name"));
        }

        public ActionResult Search(TestViewModel test)
        {
            return View(test);
        }
    }
}

Models

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace AgencyFinder.WebSite.Models
{
    public class Country
    {
        public int CountryId
        {
            get;
            set;
        }
        public string Name
        {
            get;
            set;
        }

    }
}
///////////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace AgencyFinder.WebSite.Models
{
    public class City
    {
        public int CityId
        {
            get;
            set;
        }
        public int CountryId
        {
            get;
            set;
        }
        public string Name
        {
            get;
            set;
        }
    }
}
/////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace AgencyFinder.WebSite.Models
{
    public class Location
    {
        public List<Country> CountryList
        {
            get;
            set;
        }
        public List<City> CityList
        {
            get;
            set;
        }
        public int CountryId
        {
            get;
            set;
        }
        public int CityId
        {
            get;
            set;
        }
    }
}

If we submit form, after that If you select parent different value then It displays previous selected data value in child combo box. cascading is ok.