How can I implement custom exceptions in ASP.NET Core?

How can I implement custom exceptions in ASP.NET Core?

You can create a custom exception class by inheriting from the built-in Exception class. Then, you can throw this exception in your application.

Can you show me an example of a custom exception class?

Sure! Here's a simple example:

public class CustomNotFoundException : Exception
{
    public CustomNotFoundException(string message) : base(message) {}
}

How do I handle this custom exception in my middleware?

You can create a middleware that catches exceptions and checks if they are of your custom type. Then, return a specific response.

What should I include in the response when the exception is caught?

Include a status code, a message, and any additional details that might help the client understand the error.