How can I customize middleware in ASP.NET?

How can I customize middleware in ASP.NET?

You can customize middleware in ASP.NET by creating a custom middleware class and adding it to the request pipeline.

What are some common use cases for custom middleware?

Common use cases include logging, authentication, error handling, and modifying request/response objects.

Can you show me a simple example of a custom middleware?

Sure! Here's a basic example:

public class CustomMiddleware {
    private readonly RequestDelegate _next;

    public CustomMiddleware(RequestDelegate next) {
        _next = next;
    }

    public async Task InvokeAsync(HttpContext context) {
        // Custom logic before the next middleware
        await _next(context);
        // Custom logic after the next middleware
    }
}

How do I register this middleware in the Startup class?

You can register it in the Configure method like this:

public void Configure(IApplicationBuilder app) {
    app.UseMiddleware<CustomMiddleware>();
}