how to copy listbox data and display in another listbox MVC4

Question

how to data copy in listbox1 and store viewbag but viewbag data display and store in listbox 2

 

My controller code ------------------

 

public ActionResult Index()

{

DataClasses1DataContext db = new DataClasses1DataContext();

List<TestTable> objlist = (from data in db.TestTables

select data).ToList();

SelectList objmodeldata = new SelectList(objlist, "ColumnID", "ColumnID");

/*Assign value to model*/

CountryModel objListmodel = new CountryModel();

objListmodel.ListModel = objmodeldata;

return View(objListmodel);

}

[HttpPost]

public ActionResult Index(string listcountry)

{

DataClasses1DataContext objentity = new DataClasses1DataContext();

List<TestTable> objlist = (from data in objentity.TestTables

select data).ToList();

TestTable objdata = new TestTable();

objdata.ColumnID = "SELECT";

// objdata.ColumnID = 0;

objlist.Insert(0, objdata);

SelectList objmodeldata = new SelectList(objlist, "ColumnID", "ColumnID");

CountryModel objcountrymodel = new CountryModel();

objcountrymodel.ListModel = objmodeldata;

ViewBag.ColumnID = objlist.Where(m => m.ColumnID ==

listcountry).FirstOrDefault().ColumnID;

return View(objcountrymodel);

}

 

View Code---------------------------------------------

 

@model MvcLIstBoxTask.Models.CountryModel

@{

ViewBag.Title = "Bind ListBox in MVC Using C#.Net";

}

@using (Html.BeginForm("Index", "Home"))

{

<h2>Bind ListBox</h2>

@Html.ListBox("listcountry", Model.ListModel, new { @style = "width:200px;height:100px;" })

<br /><br />

<input type="submit" value="Submit" />

<br />

<div>

Selected list :@ViewBag.ColumnID

</div>

}

 

please help me any one ......