private void sign_Click(object sender, RoutedEventArgs e)
        {
            using (PlayerDataContext Pldb = new PlayerDataContext(strConnectionString))
            {
                if (Pldb.DatabaseExists() == false)
                {
                    Pldb.CreateDatabase();
                }

                if (sign_up_name.IsChecked == true)
                {
                    player newPlayer = new player
                    {
                        pl_name  = user.Text,
                        lvl_1_sc = 0,
                        lvl_2_sc = 0,
                        lvl_3_sc = 0,
                        pl_pwrd  = pwd.Password,
                        lvl_1_ht = "00:00:00",
                        lvl_2_ht = "00:00:00",
                        lvl_3_ht = "00:00:00",
                        corr_10  = false,
                        corr_3   = false,
                        corr_5   = false,
                        rn_1     = false
                    };

                    try
                    {
                        Pldb.Players.InsertOnSubmit(newPlayer);
                        Pldb.SubmitChanges();
                        IsolatedStorageSettings.ApplicationSettings["cur_uid"] = user.Text;
                        NavigationService.Navigate(new Uri("/photocapt.xaml", UriKind.Relative));
                    }
                    catch
                    {
                        MessageBox.Show("The username already exists.Enter a different username OR Sign in with this username.");
                    }
                }

                else
                {
                    IQueryable <player> EmpQuery = from pl in Pldb.Players where pl.pl_pwrd == pwd.Password && pl.pl_name == user.Text select pl;
                    player pl_cur = EmpQuery.FirstOrDefault();
                    if (pl_cur == null)
                    {
                        MessageBox.Show("Either username or password is incorrect or both are incorrect");
                    }
                    else
                    {
                        IsolatedStorageSettings.ApplicationSettings["cur_uid"] = user.Text;
                        NavigationService.Navigate(new Uri("/mainmenu.xaml", UriKind.Relative));
                    }
                }
                //IQueryable<player> EmpQuery = from pl in Pldb.Players where pl.pl_pwrd == pwd.Password select pl;
                //player pl_cur = EmpQuery.FirstOrDefault();

                //        if(pl_cur==null)
                //        {
                //            pl_cur.lvl_1_sc = 0;
                //            pl_cur.lvl_2_sc = 0;
                //            pl_cur.lvl_3_sc = 0;
                //            Pldb.Players.InsertOnSubmit(pl_cur);
                //            Pldb.SubmitChanges();

                //        }

                //player newPlayer = new player
                //{
                //    pl_name = user.Text,
                //    lvl_1_sc = 0,
                //    lvl_2_sc = 0,
                //    lvl_3_sc = 0,
                //    pl_pwrd=pwd.Password
                //};


                //            Pldb.Players.InsertOnSubmit(newPlayer);
                //            Pldb.SubmitChanges();
                //IsolatedStorageSettings.ApplicationSettings["cur_uid"] = user.Text;
            }

            // NavigationService.Navigate(new Uri("/Prog.xaml", UriKind.Relative));
        }