private void SubmitCommandExecute(object obj)
 {
     try
     {
         string password = (obj as PasswordBox).Password;
         if (UserName.Equals(userPass.ElementAt(1)) && password.Equals(userPass.ElementAt(3)))
         {
             OwnerWindow master = new OwnerWindow();
             loginScreen.Close();
             master.ShowDialog();
         }
         else if (serviceManager.IsUser(UserName))
         {
             Manager = serviceManager.FindManager(UserName);
             if (SecurePasswordHasher.Verify(password, Manager.Password))
             {
                 ManagerWindow managerWindow = new ManagerWindow(Manager);
                 loginScreen.Close();
                 managerWindow.ShowDialog();
             }
             else
             {
                 MessageBox.Show("Wrong usename or password!");
             }
         }
         //else if (serviceAdmin.IsUser(UserName))
         //{
         //    Admin = serviceAdmin.FindAdmin(UserName);
         //    if (SecurePasswordHasher.Verify(password, Admin.UserPassword))
         //    {
         //        clinicList = serviceClinic.GetAllClinics().ToList();
         //        if (clinicList.Count == 0)
         //        {
         //            CreateClinic createClinic = new CreateClinic();
         //            loginScreen.Close();
         //            createClinic.ShowDialog();
         //        }
         //        else
         //        {
         //            AdminWindow adminWindow = new AdminWindow();
         //            loginScreen.Close();
         //            adminWindow.ShowDialog();
         //        }
         //    }
         //}
         else
         {
             MessageBox.Show("Wrong usename or password!");
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.ToString());
     }
 }