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
Explain
Blazor allows developers to write web UIs in C# instead of JavaScript.
It supports two hosting models: Blazor WebAssembly (client-side) and Blazor Server (server-side).
Provides component-based architecture for reusable UI elements.
Integrates seamlessly with ASP.NET Core backend services.
Widely used for enterprise web apps, dashboards, and full-stack .NET applications.
Core Features
Razor syntax for UI components
Dependency Injection (DI) support
Event handling in C#
JavaScript interop when needed
State management via cascading values and parameters
Basic Concepts Overview
Razor components are reusable UI blocks
Data binding supports one-way and two-way flows
Dependency Injection enables service injection
Routing maps URLs to components
Event handling uses standard C# methods
Project Structure
Pages/ - routed UI components
Shared/ - reusable components
wwwroot/ - static files (JS, CSS)
Program.cs - app startup and DI configuration
App.razor - routing and root component
Building Workflow
Create a new Blazor project
Develop Razor components for UI
Inject services for business logic
Bind data and handle events
Deploy app as WebAssembly or Server app
Difficulty Use Cases
Beginner: build simple forms and data display
Intermediate: implement CRUD with APIs
Advanced: complex state management and nested components
Expert: full enterprise dashboard with authentication
Architect: integrate WebAssembly, server-side, and APIs
Comparisons
Blazor vs React: C# vs JavaScript, full-stack vs frontend-only
Blazor vs Angular: .NET integration vs TypeScript ecosystem
Blazor vs Vue: component-based similarity, different languages
Blazor WebAssembly vs Server: client-side vs server-side execution
Blazor vs Razor Pages: SPA interactivity vs traditional page model
Versioning Timeline
2018 - Blazor first announced by Microsoft
2019 - Blazor WebAssembly experimental release
2020 - Blazor WebAssembly official release with .NET 5
2021-2022 - .NET 6 and 7 improvements, server-side updates
2023-2025 - Blazor maturation, component libraries, and tooling enhancements
Glossary
Razor: templating syntax for components
Component: reusable UI block
WebAssembly: client-side runtime for .NET
Dependency Injection: service injection system
Interop: integration with JavaScript
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.