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