Learn BLAZOR with Real Code Examples
Updated Nov 25, 2025
Architecture
Components -> Razor + C# code
Pages -> components mapped to routes
Services -> DI for shared logic
State -> cascading values, singleton services
Interop -> optional JavaScript integration
Rendering Model
Blazor Server -> UI events sent over SignalR
Blazor WebAssembly -> C# runs in browser
Components render HTML via Razor templates
Event handling mapped to C# methods
State changes trigger re-rendering of affected components
Architectural Patterns
Component hierarchy and nesting
Dependency Injection for shared services
State management with cascading values
Routing via @page directive
Optional JavaScript interop for advanced features
Real World Architectures
Enterprise dashboards with authentication and APIs
E-commerce web apps with reusable components
Client portals integrating multiple services
Data visualization apps with charts and grids
Full-stack .NET applications sharing code client/server
Design Principles
Component-based UI design
Full-stack C# development
Seamless .NET integration
Flexible hosting (WebAssembly or Server)
Strong tooling support via Visual Studio and CLI
Scalability Guide
Use Blazor Server with SignalR for large-scale apps carefully
Cache static content and APIs
Split WebAssembly app into lazy-loaded components
Use efficient state management
Deploy via scalable cloud hosting (Azure, AWS)
Migration Guide
Migrate Razor Pages or MVC apps to Blazor components
Refactor JS logic to C# if possible
Integrate APIs via HttpClient
Update routing and navigation
Test both WebAssembly and Server hosting models