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May 21st, 2018
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  1. var user = App.db.User.FirstOrDefault(x => x.Login == this.tbLogin.Text && x.Password == this.tbPassword.Password);
  2.  
  3. if (user == null)
  4. {
  5. MessageBox.Show("Такого пользователя не существует", "Ошибка авторизации", MessageBoxButton.OK, MessageBoxImage.Error);
  6. return;
  7. }
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