WebApplication
WebApplication is an ASP.NET Core application type that hosts configured services, runs the web server, and exposes the HTTP request-processing pipeline.
ASP.NET Core in Action, 3e
WebApplication is the ASP.NET Core type that represents a configured web application and exposes its request-processing pipeline and endpoint-registration capabilities.
- How it is used
- Configures the request pipeline and endpoints, then starts the ASP.NET Core server.
- How deep it goes
- Works through creation, middleware ordering, endpoint mapping, environment checks, and running; leaves detailed treatment of hosting environments for later.
- Examples
- Uses Hello World and JSON-returning minimal API endpoints, a welcome-page pipeline, and a Razor Pages startup configuration.
- What you can do after
- Build it from scratch: configure a small ASP.NET Core application, map endpoints, add middleware in order, and run it.
Read how ASP.NET Core in Action, 3e explains WebApplication →
Pro ASP.NET Core 7, Tenth Edition
WebApplication is the ASP.NET Core application type that configures request processing and runs the web server.
- How it is used
- Configures ASP.NET Core services, middleware, endpoints, and server execution from Program.cs.
- How deep it goes
- Explains the builder-to-run lifecycle, endpoint mapping, middleware, configuration, and environment access without descending into server internals.
- Examples
- Uses a Hello World endpoint, environment-specific service registration, middleware, configuration access, and an observable HTTP response.
- What you can do after
- Build and operate a minimal ASP.NET Core request pipeline with mapped endpoints, middleware, configuration, and environment-specific services.
Read how Pro ASP.NET Core 7, Tenth Edition explains WebApplication →
Related concepts
- WebApplicationBuilderproduced by · WebApplicationBuilder is an ASP.NET Core builder type that configures application services, hosting, logging, and related settings before constructing a WebApplication.
- IEndpointRouteBuilderimplements · IEndpointRouteBuilder is an ASP.NET Core interface for registering route endpoints during application request-processing configuration.
- middlewareproduces · Middleware is an intermediate software component or layer that processes or mediates requests, messages, or operations between other components, often adding behavior or controlling their flow.
- application propertiesuses · Application properties are named configuration settings that provide values used to configure an application's behavior.
- DeveloperExceptionPageMiddlewareconfigures · DeveloperExceptionPageMiddleware is ASP.NET Core middleware that catches unhandled pipeline exceptions and generates a detailed diagnostic error page for developers.
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