@model AppTest.Web.ViewModels.T1ViewModel

@using (Html.BeginForm("Print", "Test", new { fileprn = "file.prn",
 parameterJson = JsonConvert.SerializeObject(Model)}))
{
    @Html.AntiForgeryToken()
  
    <div class="form-horizontal">  
        <div class="form-group">
                @Html.BootstrapTextBoxFor(model => model.codice)
                @Html.BootstrapTextBoxFor(model => model.descr)   
        </div> 
       <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Print" class="btn btn-default" />
            </div>
        </div>
    </div>


namespace AppTest.Web.Controllers
{
    public class TestController : Controller
    {
        // GET: 
        public ActionResult Index()
        {

            var vm = new T1ViewModel()
            {
                codice= "cod12345",
                descr= "descrizione12345"
            };
            
                
            return View(vm);
        }

        // Post: Test/Print
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Print(String fileprn, String parameterJson, T1ViewModel modelTest)
        {
            var value = new Hashtable();
            var value1 = new Hashtable();

}