Payment Processing Strategy Pattern Example

This C# console application demonstrates the Strategy design pattern to process payments using different strategies: Credit Card, PayPal, and Mobile payments.

Features

• Strategy Pattern: Switch between Credit Card, PayPal, and Mobile payment methods.
• Immutable Model: Ensures payment details remain unchanged.
• User Interaction: Select payment method during runtime.
• Extensible: Easily add new payment strategies.

Usage

1. Run the application:

   dotnet run

2. Select a payment strategy:

   • 1: Credit Card
   • 2: PayPal
   • 3: Mobile

3. Process the payment and see the result.

Code Structure

• PaymentOptions: Immutable record for payment details.
• IPaymentStrategy: Interface for payment methods.
• CreditCardPaymentStrategy, PayPalPaymentStrategy, MobilePaymentStrategy: Implementations of payment strategies.
• PaymentProcessor: Processes payments using the selected strategy.

License

This project is licensed under the MIT License.