Tutorials ASP.NET Core Web API Tutorial
ASP.NET Core Web API Versioning using Query String — Complete Guide
ASP.NET Core Web API Versioning using Query String — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of ASP.NET Core Web API Tutorial on Toolliyo Academy.
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ASP.NET Core Web API Tutorial · Lesson 155 of 175
ASP.NET Core Web API Versioning using Query String
Beginner ✓ → Intermediate ✓ → Advanced ✓ → Professional
Professional · 4 — E-commerce capstone · ~10 min · Module 14: API Versioning
What is this?
ASP.NET Core Web API Versioning using Query String lets ShopNest.API evolve without breaking mobile apps — v1 and v2 URLs, headers, or query strings.
Why should you care?
You cannot force every app store user to update on the day you ship a breaking JSON change.
See it live — copy this example
Create a Web API (dotnet new webapi), paste the example, run dotnet run, test in Swagger.
[ApiVersion("1.0")]
[Route("api/v{version:apiVersion}/products")]
public class ProductsV1Controller : ControllerBase { }
Run Example »
Edit the code and click Run — like W3Schools Try it Yourself.
What happened?
- Study the example, run dotnet run, and test in Swagger.
- ASP.NET Core Web API Versioning using Query String connects to earlier modules in this course.
Try it yourself
- Read what ASP.NET Core Web API Versioning using Query String means for ShopNest.API.
- Type the example — do not only copy-paste.
- Test in Swagger or Postman.
- Change a route URL or DTO property and save — test again in Swagger or curl.
- Return the wrong status code on purpose (404 instead of 200) and see what the client shows.
Remember
You understand ASP.NET Core Web API Versioning using Query String in plain language. You traced or ran working C# in ShopNest.API. Move on when you can teach this topic to a friend.