Before writing your first Blazor WASM app, you need the right tools. The setup is straightforward and cross-platform — Windows, macOS, and Linux are all supported.

Required: .NET SDK

Download and install the latest .NET SDK (8.0 or later) from dotnet.microsoft.com. Verify the install:

dotnet --version

Recommended: Visual Studio 2022

• Install the ASP.NET and web development workload
• Blazor tooling is included — hot reload, IntelliSense, debugging

Alternative: VS Code

• Install the C# Dev Kit extension
• Run and debug from the integrated terminal

Create Your First Project

dotnet new blazorwasm -o MyBlazorApp
cd MyBlazorApp
dotnet run

Project Structure

• wwwroot/ — static assets and index.html
• Pages/ — routable components
• Shared/ — reusable components
• Program.cs — app entry point and DI setup

Reference:

Wikipedia: .NET

https://en.wikipedia.org/wiki/.NET