MapGet
MapGet is an ASP.NET Core endpoint-mapping method that associates HTTP GET requests matching a URL pattern with a handler.
ASP.NET Core in Action, 3e
MapGet is an ASP.NET Core endpoint-mapping method for associating a URL pattern and handler with HTTP GET requests.
- How it is used
- Maps URL paths to handlers that retrieve data through HTTP GET requests in minimal APIs.
- How deep it goes
- Defines paths, handlers, route values, and GET semantics, but does not descend into middleware implementation.
- Examples
- Uses a root greeting endpoint and a person route that filters data by a name parameter.
- What you can do after
- Apply MapGet to build minimal API endpoints that return responses for specific GET paths.
.NET in Action, Second Edition
MapGet is an ASP.NET Core endpoint-mapping method that associates HTTP GET requests with a handler.
- How it is used
- Maps ASP.NET Core routes to handler functions in a minimal web service.
- How deep it goes
- Explains root and parameterized routes, typed parameters, name matching, and query strings; stops short of broader routing internals.
- Examples
- Uses root and ASCII-art routes, Figgle rendering, and an optional font query string.
- What you can do after
- Build it from scratch by mapping routes to typed C# handlers and returning generated responses.
Building Web APIs with ASP.NET Core
MapGet is an ASP.NET Core minimal-API method that maps HTTP GET requests to route handlers.
- How it is used
- Maps the production exception-handling path to a GET endpoint returning a standardized error response.
- How deep it goes
- Defines a concrete route and response, then extends the handler with exception details and trace identifiers.
- Examples
- Uses the /error route to return RFC 7807 JSON containing status, detail, and a trace identifier.
- What you can do after
- Build it from scratch by mapping a GET route to a handler that produces a controlled ProblemDetails response.
Read how Building Web APIs with ASP.NET Core explains MapGet →
Related concepts
- HTTP GETuses · HTTP GET is a request method for retrieving a representation of a resource identified by the request target, without requesting a state change.
- routinguses · Routing is the selection of a path, destination, or processing component to direct an item, request, or flow toward an intended endpoint.
- Problem Detailsproduces · Problem Details is a standardized HTTP response format for communicating machine-readable information about a problem occurrence, commonly serialized as JSON.
- IEndpointRouteBuilderuses · IEndpointRouteBuilder is an ASP.NET Core interface for registering route endpoints during application request-processing configuration.
- minimal APIused by · A minimal API is an ASP.NET Core programming model for defining HTTP endpoints with minimal framework ceremony, typically without controller classes.
- WebApplicationuses · WebApplication is an ASP.NET Core application type that hosts configured services, runs the web server, and exposes the HTTP request-processing pipeline.
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