Binding a Gridview using Entity Framework from SQL Server

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

public partial class BindGridView : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if(!IsPostBack)
        {
            ContactsDataContext db = new ContactsDataContext();
            dgvContacts.DataSource = db.Contacts1;
            dgvContacts.DataBind();
        }
    }
}