What methods can be used to configure routing in a system?

In C#, routing can be configured in several ways depending on the framework and architecture used:

1. Attribute Routing

   • Used in ASP.NET MVC and Web API.
   • Routes are defined directly above controller methods using attributes like [Route], [HttpGet], [HttpPost], etc.

   [Route("api/products/{id}")]
   public IActionResult GetProduct(int id) { ... }
   

2. Convention-based Routing

   • Defined in a configuration file or in the Startup.Configure method.
   • For example, in ASP.NET Core:

   app.UseEndpoints(endpoints =>
   {
       endpoints.MapControllerRoute(
           name: "default",
           pattern: "{controller=Home}/{action=Index}/{id?}");
   });
   

3. Custom Route Handlers

   • You can create custom route handlers for more flexible logic.

4. Using Middleware

   • In ASP.NET Core, routing can be implemented through middleware, intercepting requests and redirecting them.

The choice of method depends on the project requirements and the stack used.