Скачать или смотреть ASP.NET Core API + Blazor WebAssembly (.NET 9) – Tweets & Messaging System (JWT + OAuth) | Part 6

Part 6

In Part 6 of this Full-Stack .NET 9 series, we build a Tweets & Messaging System using an API-first approach with ASP.NET Core Web API and Blazor WebAssembly (WASM).

This video focuses on real-world application architecture, where a secure backend API is built first and then consumed by a Blazor WebAssembly frontend, fully protected with JWT and OAuth authentication.
🚀 What You’ll Learn in This Video
🔹 Backend – ASP.NET Core API (.NET 9)

Build tweet and messaging endpoints

Secure the API using JWT & OAuth

Implement authorization and access control

Use Entity Framework Core with SQL Server

Create clean DTOs for client consumption

Add audit logging for user actions

Handle 401 / 403 / validation errors properly

🔹 Frontend – Blazor WebAssembly (WASM)

Consume secure API endpoints using JWT tokens

Build tweet feeds and user messaging UI

Navigate between profiles and conversations

Pass data using route & query parameters

Handle API errors and authentication failures

Update UI state without page reloads

🛠 Technologies Used

.NET 9

ASP.NET Core Web API

Blazor WebAssembly (WASM)

Entity Framework Core

SQL Server

JWT Authentication

OAuth

Secure REST APIs

C#

📌 Architecture Highlights

✔ API-first design
✔ Secure token-based authentication
✔ Clean separation between frontend and backend
✔ Production-ready patterns
https://github.com/ArsamCodex