API Versioning In ASP.NET Core With Three Different Ways

In ASP.NET Core, there are multiple ways to handle API versioning. Here are three commonly used approaches:

1. URL-based Versioning: With this approach, the version number is included in the URL of the API endpoint. For example:

   https://api.example.com/v1/products
   https://api.example.com/v2/products

You can achieve URL-based versioning by configuring the routing system in ASP.NET Core to include the version in the route template. This can be done using the MapRoute or MapControllerRoute methods in the Startup.Configure method.

1. Query Parameter-based Versioning: In this approach, the version number is specified as a query parameter in the API URL. For example:

   https://api.example.com/products?version=1
   https://api.example.com/products?version=2

To implement query parameter-based versioning, you can use the ApiVersion attribute on your controllers or actions and configure the routing system to include the version as a query parameter.

1. Header-based Versioning: This approach involves specifying the version number in a custom header of the HTTP request. For example:

   GET /products HTTP/1.1
   Host: api.example.com
   X-API-Version: 1

To implement header-based versioning, you can create a custom versioning policy and apply it to your controllers or actions using attributes like ApiVersion and ApiVersionReader.

It's important to note that these are just a few approaches to API versioning in ASP.NET Core, and there are other techniques available as well. The choice of versioning strategy depends on your specific requirements and preferences.