What are some examples of routing in ASP.NET?

What are some examples of routing in ASP.NET?

In ASP.NET, routing is used to map incoming requests to specific handlers. For example, you can define a route like this:

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

This route maps URLs to the Home controller's Index action.

Can you give me another example?

Sure! Here's another example:

routes.MapRoute(
    name: "Product",
    url: "Products/{id}",
    defaults: new { controller = "Products", action = "Details" }
);

This route directs requests like /Products/5 to the Details action of the Products controller, passing 5 as the id.

What if I want to add constraints to the route?

You can add constraints to your routes to restrict the values that can be passed. For example:

routes.MapRoute(
    name: "YearRoute",
    url: "{year}/{month}/{day}",
    defaults: new { controller = "Blog", action = "Archive" },
    constraints: new { year = "\d{4}", month = "\d{1,2}", day = "\d{1,2}" }
);

This route only matches if the year is a four-digit number, and the month and day are one or two digits.