How do I set up middleware in ASP.NET Core?

How do I set up middleware in ASP.NET Core?

To set up middleware in ASP.NET Core, you need to configure it in the Startup.cs file within the Configure method.

Can you give me an example of a simple middleware?

Sure! Here's a simple example:

public class SimpleMiddleware
{
    private readonly RequestDelegate _next;

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

    public async Task InvokeAsync(HttpContext context)
    {
        // Do something before the next middleware
        await context.Response.WriteAsync("Hello from SimpleMiddleware!");
        await _next(context);
        // Do something after the next middleware
    }
}

How do I register this middleware in the pipeline?

You can register it in the Configure method like this:

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseMiddleware<SimpleMiddleware>();
    // Other middlewares
}

What are some common use cases for middleware?

Common use cases include logging, authentication, error handling, and modifying requests or responses.