Route data
Route data is a collection of named information associated with a route and made available for request handling, navigation, rendering, or URL generation.
ASP.NET Core in Action, 3e
Route data is a collection of named values supplied to an endpoint route during URL generation.
- How it is used
- Supplies named values to URL generation so links can follow an endpoint’s route template instead of hardcoding its path.
- How deep it goes
- Works through anonymous-object route data and named-endpoint path generation; defers Razor Pages and MVC URL-generation methods.
- Examples
- Demonstrates a named product endpoint generating /product/big-widget and a default parameter giving /product/shoes the value name=all.
- What you can do after
- Apply it via LinkGenerator.GetPathByName to generate a path for a named minimal API endpoint without hardcoding the link.
Pro ASP.NET Core 7, Tenth Edition
RouteData is the ASP.NET Core request-context data containing values produced by routing for the matched URL, including values captured from URL segments.
- How it is used
- Uses route values to adapt view-component output and supply action arguments through model binding.
- How deep it goes
- Demonstrates named-value access, a component unit test, and binding precedence without detailing routing internals.
- Examples
- Shows category-link highlighting, a route-data unit test, conditional controller-request output, and competing URL id values.
- What you can do after
- Apply it via ASP.NET Core RouteData.Values to tailor a view component or predict which id value an action receives.
Read how Pro ASP.NET Core 7, Tenth Edition explains route data →
Related concepts
- route parameterproduced by · A route parameter is a named variable embedded in a URL path whose value is captured from a matching request to identify or select a resource or operation.
- model bindingused by · Model binding is the process of locating incoming data, converting it to appropriate types, and assigning it to application objects or handler parameters.
- view componentused by · A view component is a reusable presentation component that encapsulates application logic and renders a portion of a user interface or response.
- form datacontrasts with · Form data is a collection of named values associated with form controls for submission or processing.
- url generationuses · URL generation is the programmatic construction of resource or endpoint URLs from routing metadata and parameter values.
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