Is it any way to get facebook person details by use of email id in my asp.net?

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class facebook_login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string host = Request.ServerVariables["HTTP_HOST"];
        string facebookClientId = 
          System.Configuration.ConfigurationManager.AppSettings["FacebookClientId"];
        string RedirectURL = "";
        if (Request.QueryString["redirectURL"] != null)
        {
            RedirectURL = Request.QueryString["redirectURL"].ToString();
            Session["RedirectURL"] = RedirectURL;
        }
        Response.Redirect(@"https://graph.facebook.com/oauth/authorize?client_id=" + 
          facebookClientId + "&redirect_uri=http://" + host + 
          @"/FBcallback.aspx&scope=publish_stream,offline_access,publish_actions");
    }
}