const validCodes = ["ABC123"]; // In a real scenario, use a database
public class RegistrationForm : Form { private TextBox registrationCodeTextBox; private Button validateButton; winimage registration code
try { bool isValid = await ValidateRegistrationCodeAsync(registrationCode); if (isValid) { MessageBox.Show("Registration code is valid. You can now use WinImage."); // Enable full functionality of WinImage } else { MessageBox.Show("Invalid registration code. Please try again."); } } catch (Exception ex) { MessageBox.Show("An error occurred: " + ex.Message); } } const validCodes = ["ABC123"]; // In a real