How deeply does ASP.NET Core in Action, 3e cover MapControllerRoute?

Defines a conventional route template and defaults, while leaving detailed conventional-routing mechanics for later treatment.

MapControllerRoute

As explained in ASP.NET Core in Action, 3e

MapControllerRoute is an ASP.NET Core endpoint-mapping method that maps MVC controllers using a conventional route template.

MapControllerRoute maps MVC controllers as ASP.NET Core endpoints and gives them a default conventional route. It belongs in Program.cs after MVC services and routing middleware are configured. section 19.2

Default MVC route

A standard MVC application uses: app.MapControllerRoute(name: "default", pattern: "{controller=Home}/{action=Index}/{id?}"); This maps requests to controller actions, defaulting to HomeController, its Index action, and an optional id. section 19.2

Listing 19.1 Program.cs for the default MVC project

WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
 
builder.Services.AddControllersWithViews();               #1
 
WebApplication app = builder.Build();
 
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/Error");               #2
    app.UseHsts();
}
 
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
 
app.MapControllerRoute(                                   #3
    name: "default",                                      #3
    pattern: "{controller=Home}/{action=Index}/{id?}");   #4
 
app.Run();
#1 AddControllersWithViews adds the services for MVC controllers with Razor Views.
#2 The exception handler path differs from the default Razor Pages path of /Error.
#3 Adds all MVC controllers in your application using conventional routing
#4 Defines the default conventional route pattern

Inspect the complete Program.cs setup, including AddControllersWithViews, middleware, and the MapControllerRoute call. section 19.2

How ASP.NET Core in Action, 3e covers it

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Related concepts

endpoint routingconfigures · Endpoint routing is an ASP.NET Core mechanism that matches incoming HTTP requests to endpoints and separates endpoint selection from endpoint execution.
controllerconfigures · A controller is a software component or architectural role that receives inputs or requests and coordinates their handling by other parts of an application.
Mapimplements · Map is an ASP.NET Core endpoint-mapping method that associates a URL pattern and one or more HTTP methods with request-handling logic.
MapControllerscontrasts with · MapControllers is an ASP.NET Core endpoint-mapping method that exposes attribute-routed controller actions as application endpoints.

This explainer was generated by Manning's knowledge graph from the text of ASP.NET Core in Action, 3e. The section links point to the parts of the book it draws on.