🚀 Mastering Filters in ASP.NET Core

Mastering Filters in ASP.NET Core.

If you're working with ASP.NET Core, you're likely already familiar with controllers and actions, but have you explored filters yet? Filters in ASP.NET Core are an incredibly powerful feature that allow you to add functionality before or after an action method is executed, making them perfect for cross-cutting concerns like logging, error handling, and authorization. 🔍

Authorization Filters
Purpose: Check if the user is authorized to access a resource.
Example: [Authorize] attribute.
Usage: Can be applied globally, to controllers, or to specific actions.

Resource Filters
Purpose: Run code before and after the execution of the rest of the pipeline. Often used for caching.
Example: Implementing IResourceFilter.
Usage: Executes after authorization but before model binding.

Action Filters
Purpose: Run code before and after an action method executes.
Example: [OnActionExecuting] and [OnActionExecuted] attributes.
Usage: Ideal for logging, validation, or modifying the action result.

Exception Filters
Purpose: Handle exceptions thrown by action methods or other filters.
Example: Implementing IExceptionFilter.
Usage: Great for global exception handling strategies, such as logging or custom error responses.

Result Filters
Purpose: Run code before and after the execution of action results.
Example: [OnResultExecuting] and [OnResultExecuted] attributes.
Usage: Useful for modifying the response, e.g., adding headers or changing the result.

Why are filters a game-changer?

Because they help you keep your code DRY (Don't Repeat Yourself) and maintainable! 🙌

If you're looking to simplify your ASP.NET Core development, it’s time to explore the power of filters!