🏆 Blazor Web App
While Angular is a powerful industry standard, Blazor Web App (.NET 8+) is architecturally superior for the specific constraints you listed.
Feature | Blazor Web App | Angular |
Primary Language | C# (Backend & Frontend) | TypeScript |
Architecture Fit | Perfect for Modular Monoliths | Better for Microservices / Decoupled UIs |
Hiding Data | Native. Database calls happen in server memory. | Difficult. Requires a public API that users can inspect. |
Development Speed | Fast. Direct service injection (No API needed). | Slower. Requires building/maintaining a REST/GraphQL API. |
SSR (Server Side Rendering) | First-class citizen. Enabled by default. | Supported (Angular Universal/SSR) but complex to set up. |
Ecosystem | Growing, reliant on .NET NuGet packages. | Massive, thousands of third-party JS libraries. |
🔍 Why Blazor Web App is Better for You
1. The "Hidden Data" Requirement (Security)
Blazor Web App (Interactive Server): Your code runs entirely on the server. You can write
_db.Users.ToList()directly inside your component. The user's browser receives only the rendered HTML over a WebSocket. They cannot see your database queries, logic, or even the API endpoints (because there aren't any).Angular: Angular runs in the user's browser. To get data, it must make an HTTP request to your server. A user can simply press F12 (Developer Tools), go to the "Network" tab, and see the exact API call (e.g.,
GET /api/users), the parameters you sent, and the JSON response. You cannot hide this interaction in a standard Angular app.
2. The "Modular Monolith" Architecture
Blazor: You can structure your monolith into projects like
Modules.Inventory,Modules.Identity. Your UI project can simply reference these projects. You call a standard C# method to get data. Zero network latency between frontend and backend logic because they are in the same process.Angular: Angular strictly enforces a physical separation. Even if you want a monolith, you must build a REST API (Controllers) to let Angular talk to your backend. This doubles your work: you have to write the backend logic, then an API controller, then a TypeScript model, and then an Angular service to call it.
3. Ease of Development
Blazor: You use one language (C#) for everything. You can share validation rules (e.g.,
UserDto.cs) between the backend database and the frontend form. If you rename a property in the backend, the frontend breaks at compile time (good!), saving you from runtime errors.Angular: You must context-switch between C# and TypeScript. If you change a backend C# model, you must remember to manually update the TypeScript interface in Angular, or your app will break silently.
⚠️ When Would You Choose Angular Instead?
I would only recommend Angular for your case if:
Public API: You are building a public-facing API that other developers (mobile apps, third parties) need to consume anyway.
Offline Capability: You strictly need the app to work 100% offline (PWA) with complex logic (Blazor WASM can do this, but Blazor Server cannot).
Jobs: You are looking to get hired specifically as a generic Frontend Developer (Angular/React market is larger).