about Asp.net MVC3 problem entity class problem

using System.Web.Mvc;
using MvcApplication2.Models;

namespace MvcApplication2.Controllers
{
    public class TestController : Controller
    {
        //
        // GET: /Test/
        
        public void FillDataInTest()
        {
            Test test = new Test(); //Test is entity class
            SqlConnection objConn = new SqlConnection(@"server=DEV;Trusted_Connection=true;" + @"DATABASE=bank;User ID=BReader;Password=br123");
            SqlCommand objCommand = new SqlCommand(@"Select Pub_bank_id,pub_bank_branch FROM parameter_online", objConn);

            SqlDataAdapter da = new SqlDataAdapter(objCommand);
            DataTable dt = new DataTable();

            da.Fill(dt);
            for (int i = 0; i < dt.Rows.Count-1; i++)
            {
                test.Id =Convert.ToInt16(dt.Rows[i]["Pub_bank_id"]);
                test.Name = dt.Rows[i]["Pub_bank_id"].ToString();
            }
        }
        public ActionResult Index()
        {
            try
            {
               
               TestDBContext db = new TestDBContext();
               FillDataInTest();
               ViewBag.Id = db.Tests.OrderBy(g => g.Id).ToList();
               ViewBag.Name = db.Tests.OrderBy(a => a.Name).ToList();
                var test = new Test();
                return View(test);
            }
            catch (Exception e)
            {
                
                throw;
            }
        
        }
    }
}