private void SignInButton_Click(object sender, EventArgs e) { if (!isFieldsEmpty()) { if (LoginTextBox.Text == "Admin" && PasswordTextBox.Text == "admin") { Hide(); AdminMenu menu = new AdminMenu(); menu.Show(); } else { if (authorization.isAuthorized(LoginTextBox.Text, PasswordTextBox.Text)) { Hide(); _reader = readerBL.GetReaderByLogin(LoginTextBox.Text); UserForm form = new UserForm(_reader); form.Show(); } else { MessageBox.Show("Error, wrong data" + Environment.NewLine + "Check Login or Password"); } } } else { MessageBox.Show("Fill in empty fields"); } }