mvc4 validation Message is not showing

@model test.Models.home

@{

ViewBag.Title = "Index";

}

@using (Html.BeginForm("SaveData","Home")){

@Html.ValidationSummary(true)

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mvc;

using test.Models;

using System.Data.SqlClient;

namespace test.Controllers

{

public class HomeController : Controller

{

//

// GET: /Home/

public ActionResult Index()

{

return View();

}

[HttpPost]

public ActionResult SaveData(string uname,string pass,string fname,string lname)

{

if (ModelState.IsValid)

{

home h = new home();

h.pass = pass;

h.uname = uname;

h.fname = fname;

h.lname = lname;

SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;Initial Catalog=test;Integrated Security=True");

SqlCommand cmd = new SqlCommand("insert into db2(uid,pass,fname,lname)values('" + h.uname + "','" + h.pass + "','" + h.fname + "','" + h.lname + "')", con);

con.Open();

cmd.ExecuteNonQuery();

con.Close();

return View("SaveData");

}

return View("Index");

}

}

}

using System;

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations.Schema;

namespace test.Models

{

public class home

{

[Required(ErrorMessage="please give tha name")]

public string uname

{ get; set; }

[Required (ErrorMessage="please enter passsword")]

public string pass

{ get; set; }

[Required (ErrorMessage="please enter fname")]

public string fname

{ get; set; }

[Required(ErrorMessage = "please enter lname")]

public string lname

{ get; set; }

}

}

Please help me.