Description

When building modern C# applications whether Blazor apps, Razor Pages, APIs, or desktop tools, you'll often need to fetch data from REST APIs and handle JSON responses. But repeating the same boilerplate code for every request isn't ideal. That’s where a reusable HTTP helper comes in.

This helper method wraps HttpClient and System.Text.Json to perform HTTP GET requests and deserialize the JSON into your desired object type. It includes error handling for both network issues and invalid JSON, and it's designed to be simple, clean, and adaptable to many scenarios.

By centralizing your API logic into one method, you avoid repetition, improve maintainability, and reduce bugs. You can easily extend it to support POST, PUT, DELETE, and custom headers as needed. It’s especially helpful in Blazor WebAssembly, ASP.NET Core backend services, and any C# environment that consumes APIs.