---
title: "How do I set up routing in an ASP.NET MVC application?"  
description: "How do I set up routing in an ASP.NET MVC application?"  
author: "Rocky Dada"  
published: 2023-09-26  
updated: 2023-09-27  
canonical: https://www.mindstick.com/forum/159931/how-do-i-set-up-routing-in-an-asp-dot-net-mvc-application  
category: "asp.net mvc"  
tags: ["c#", "asp.net", "mvc"]  
reading_time: 2 minutes  

---

# How do I set up routing in an ASP.NET MVC application?

**How do I set [up routing](https://www.mindstick.com/forum/159741/how-do-you-set-up-routing-in-a-dot-net-core-api-to-handle-different-endpoints) in an [ASP.NET](https://www.mindstick.com/articles/934/default-folders-available-inside-the-asp-dot-net-application-folder) [MVC application](https://www.mindstick.com/forum/12932/how-to-consume-webservices-from-asp-dot-net-mvc-application)? also, [explain](https://www.mindstick.com/forum/157854/what-is-system-debugging-explain-some-system-debugging-tools-used-in-modern-computer-systems) the [pros](https://www.mindstick.com/articles/157170/6-valuable-pros-of-organic-cotton-bed-sheets) and consequences.**

## Replies

### Reply by Aryan Kumar

Setting up [routing](https://www.mindstick.com/articles/11998/attribute-routing-in-asp-dot-net-mvc) in an [ASP.NET MVC](https://www.mindstick.com/forum/155798/what-is-caching-in-asp-dot-net-mvc) [application](https://www.mindstick.com/articles/12824/calculator-application-in-android) is a crucial step that determines how incoming URLs are mapped to controller actions. Routing defines the structure of your application's URLs and how the application responds to them. Here's how to set up routing in an ASP.NET MVC application:

**Open RouteConfig.cs**:

- In your ASP.NET MVC project, open the **RouteConfig.cs** file. This file is usually located in the **App_Start** folder.

**Configure Routes**:

- In the **RouteConfig.cs** file, you'll find a **RegisterRoutes** method. This is where you configure your application's routes using the **RouteCollection.MapRoute** method. By default, you'll see a route configured for the default route pattern:

```plaintext
public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

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

This default route pattern consists of three segments: **controller**, **action**, and **id**. It specifies that the default controller is "Home," the default action is "Index," and the **id** parameter is optional.

**Route Parameters**:

- You can define additional route parameters based on your application's requirements. For example, you might want to include a **category** parameter in your URL:

```plaintext
routes.MapRoute(
    name: "ProductCategory",
    url: "products/{category}/{action}",
    defaults: new { controller = "Product", action = "Index" }
);
```

In this example, URLs like **/products/electronics** will map to the "Product" controller's "Index" action, and the **category** parameter will be passed as "electronics."

**Route Constraints**:

- You can apply constraints to route parameters using regular expressions to restrict the values they can accept. For instance, if you want to constrain the **id** parameter to be a numeric value:

```plaintext
routes.MapRoute(
    name: "NumericId",
    url: "items/{id}",
    defaults: new { controller = "Item", action = "Details" },
    constraints: new { id = @"\d+" }
);
```

**Route Ordering**:

- Routes are processed in the order they are defined. Make sure more specific routes are defined before more general ones to avoid conflicts.

That's it! By configuring your routes in the **RouteConfig.cs** file, you can define how URLs are mapped to controller actions in your ASP.NET MVC application. Routing is a fundamental aspect of building clean and user-friendly URLs for your web application.


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Original Source: https://www.mindstick.com/forum/159931/how-do-i-set-up-routing-in-an-asp-dot-net-mvc-application

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