Learn Blazor-wasm - 10 Code Examples & CST Typing Practice Test
Blazor WebAssembly (WASM) is a client-side web framework from Microsoft that allows developers to build interactive web applications using C# and .NET instead of JavaScript. Applications run directly in the browser via WebAssembly.
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Learn BLAZOR-WASM with Real Code Examples
Updated Nov 25, 2025
Installation Setup
Install .NET SDK (latest stable version)
Install Visual Studio 2022 or VS Code with C# extension
Create a new Blazor WebAssembly project (`dotnet new blazorwasm`)
Run project locally (`dotnet run`)
Deploy project as static web app or integrated with ASP.NET Core backend
Environment Setup
Install .NET SDK and runtime
Install Visual Studio or VS Code
Create Blazor WASM project via CLI
Configure optional backend API
Run project locally and test browser functionality
Config Files
Program.cs - app entry point and DI setup
wwwroot/ - static assets
_Imports.razor - global usings
App.razor - root component with router
Pages/*.razor - page-level components
Cli Commands
dotnet new blazorwasm - create project
dotnet run - run locally
dotnet build - compile project
dotnet publish - produce deployable output
dotnet add package <name> - add NuGet dependency
Internationalization
Use .NET localization and resource files
Support for multiple cultures and languages
Dynamic culture switching at runtime
Integrates with ASP.NET Core localization for backend
Developer-defined text and content translations
Accessibility
Components render standard HTML with ARIA support
Keyboard navigation supported by default in standard components
Screen readers can access UI content
Integration with third-party accessibility libraries
Focus management supported via Blazor lifecycle hooks
Ui Styling
CSS isolation per component
Support for Bootstrap or custom frameworks
Third-party UI component libraries
Razor syntax allows inline markup with C#
Supports theming and responsive design
State Management
Component-local state stored in C# fields/properties
Shared state via singleton services
Persistent state via local storage or IndexedDB
Event callbacks update UI reactively
No server-side state required for basic SPA
Data Management
Input via forms and events
Output rendered in components
API calls to backend services via HttpClient
Local storage for persistence
Use of Observable or reactive patterns for data flow
Frequently Asked Questions about Blazor-wasm
What is Blazor-wasm?
Blazor WebAssembly (WASM) is a client-side web framework from Microsoft that allows developers to build interactive web applications using C# and .NET instead of JavaScript. Applications run directly in the browser via WebAssembly.
What are the primary use cases for Blazor-wasm?
Interactive single-page applications (SPAs) with C#. Line-of-business applications requiring .NET libraries. Client-side applications with offline capabilities. Web apps needing tight integration with ASP.NET Core backends. Modern web UI replacement for WinForms/WPF apps
What are the strengths of Blazor-wasm?
Leverages existing .NET skills and libraries. C# code runs natively in the browser via WebAssembly. Component reuse between server-side and client-side Blazor. Strong Microsoft tooling support (Visual Studio, CLI, debugging). Secure execution sandboxed in the browser
What are the limitations of Blazor-wasm?
Initial download size can be large compared to JS frameworks. Browser compatibility depends on WebAssembly support (modern browsers only). SEO is challenging without prerendering. Limited ecosystem compared to JavaScript frameworks. Client-side execution may not be ideal for CPU-intensive tasks
How can I practice Blazor-wasm typing speed?
CodeSpeedTest offers 10+ real Blazor-wasm code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.