Learn Blazor - 10 Code Examples & CST Typing Practice Test
Blazor is a Microsoft framework for building interactive web applications using C# and .NET, running client-side via WebAssembly or server-side via SignalR.
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
Frequently Asked Questions about Blazor
What is Blazor?
Blazor is a Microsoft framework for building interactive web applications using C# and .NET, running client-side via WebAssembly or server-side via SignalR.
What are the primary use cases for Blazor?
Building interactive web applications in C#. Creating reusable UI components. Developing full-stack .NET web apps. Integrating with ASP.NET Core APIs. Rapid prototyping and enterprise dashboards
What are the strengths of Blazor?
Write web apps entirely in C#. Share code between client and server. Strong tooling via Visual Studio and .NET CLI. Integrated security and authentication features. Enterprise-grade framework with long-term support
What are the limitations of Blazor?
WebAssembly apps may have larger initial load. Limited third-party UI components compared to JavaScript frameworks. Some JavaScript interop is still needed for advanced browser APIs. SEO optimization is more complex for WebAssembly apps. Smaller developer ecosystem than React or Angular
How can I practice Blazor typing speed?
CodeSpeedTest offers 10+ real Blazor code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.