Implementing input validation on ViewModels

Input validation can be implemented in various ways and at different points within the life cycle of user interaction. It could happen as soon as a user changes a property, providing immediate feedback on the validity of the data entered. On the other hand, it might be performed only when the user initiates a certain action, such as clicking a button, thereby offering a more cumulative validation experience. Deciding on when and how to implement validation often depends on the specific requirements of your project. It’s a balance between the need for immediate feedback and maintaining a smooth, uninterrupted user flow. There’s no one-size-fits-all solution, and the strategy can vary based on the complexity of the data, the form of user interaction, and the overall design of your application.

Implementing validation on the frontend offers several advantages: it provides users with immediate feedback, ensuring a more responsive...