private void button_Click(object sender, RoutedEventArgs e)
        {
            Admin_Menu adminMenu = new Admin_Menu();

            adminMenu.Show();
            this.Close();
        }
        public void nextPageCheck()
        {
            SqlConnection con = new SqlConnection(AccessString);

            //startConnection();

            try
            {
                //startConnection();
                con.Open();
                SqlDataAdapter sda = new SqlDataAdapter("SELECT * FROM Users WHERE Username = '******' AND Password = '******' AND AdminAccess = 'Yes'", con);
                con.Close();
                con.Open();
                SqlDataAdapter sda2 = new SqlDataAdapter("SELECT * FROM Users WHERE Username = '******' AND Password = '******' AND AdminAccess = 'No'", con);
                con.Close();

                DataTable dt  = new DataTable();
                DataTable dt2 = new DataTable();

                sda.Fill(dt);
                sda2.Fill(dt2);

                if (dt.Rows.Count == 1) //Checks if the user exists in the table and is a normal user or not
                {
                    Admin_Menu admin = new Admin_Menu();
                    admin.Show();
                    this.Close();
                    //HomePage homePage = new HomePage();
                    //homePage.Show();
                }
                else if (dt2.Rows.Count == 1)   //Checks if the user is in the table and is an admin or not
                {
                    NormalUserMenu normal = new NormalUserMenu();
                    normal.Show();
                    this.Close();
                }
                else
                {
                    MessageBox.Show("You entered a wrong username and password", "Error");  //Tells the user if they ahgve entered a wrong username or password
                }
            }
            catch (Exception f)
            {
                MessageBox.Show("exception occured while accessing the database:" + f.Message + "\t" + f.GetType());    //Tells the user what error has occured
            }
        }