Need to fetch User Email from Facebook api

Hi,

I have used the following code for getting facebook user's profile information for from api, But I cannot get email.. I am getting empty value, Can anyone tell me how to fix this,, Need urgent, Please help me...

I am getting this code from ....

http://www.aspsnippets.com/Articles/ASPNet-Get-FaceBook-User-details-like-Gender-Email-Address-Location-and-Birth-Date.aspx

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using ASPSnippets.FaceBookAPI;

using System.Web.Script.Serialization;

public partial class CSfacebook : System.Web.UI.Page

{

protected void Login(object sender, EventArgs e)

{

FaceBookConnect.Authorize("user_photos,email,user_location,user_birthday", Request.Url.AbsoluteUri.Split('?')[0]);

}

protected void Page_Load(object sender, EventArgs e)

{

FaceBookConnect.API_Key = "849760551813431";

FaceBookConnect.API_Secret = "5b8036220c5c4175865c6fb74c434425";

if (!IsPostBack)

{

if (Request.QueryString["error"] == "access_denied")

{

ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('User has denied access.')", true);

return;

}

string code = Request.QueryString["code"];

if (!string.IsNullOrEmpty(code))

{

string data = FaceBookConnect.Fetch(code, "me");

FaceBookUser faceBookUser = new JavaScriptSerializer().Deserialize(data);

faceBookUser.PictureUrl = string.Format("https://graph.facebook.com/{0}/picture", faceBookUser.Id);

pnlFaceBookUser.Visible = true;

lblId.Text = faceBookUser.Id;

lblUserName.Text = faceBookUser.UserName;

lblName.Text = faceBookUser.Name;

lblEmail.Text = faceBookUser.Email;

ProfileImage.ImageUrl = faceBookUser.PictureUrl;

lblBirthday.Text = faceBookUser.Birthday;

lblGender.Text = faceBookUser.Gender;

//lblLocation.Text = faceBookUser.Location.Name;

btnLogin.Enabled = false;

}

public class FaceBookUser

{

public string Id { get; set; }

public string Name { get; set; }

public string UserName { get; set; }

public string PictureUrl { get; set; }

public string Email { get; set; }

public string Birthday { get; set; }

public string Gender { get; set; }

public FaceBookEntity Location { get; set; }

}

public class FaceBookEntity

{

public string Id { get; set; }

public string Name { get; set; }

}