Using Dependency Injection to Combine Different Ticket Validation Rules

Currently, the system places all ticket validation rules in the same method for checking. The advantage of this approach is that the code is centralized and development is faster. However, as the number of validation rules increases, the disadvantages become apparent: the validation method gets longer and longer, and debugging becomes more difficult. Is there a way to optimize this? Yes! And that is the main topic for today: "Dependency Injection".

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1. Define the Ticket Validation Interface

```c# public interface ICheckTicketService { Result Chceck(TicketOrder ticketOrder); } ```