See Routing to controller actions in ASP.NET Core
This doc page can be switched to 2.1. It shows attribute routing instructions.
But, methods like app.UseEndpoints(()=>)
, endpoints.MapControllers();
or app.MapControllers();
don't exist in my environment.
I've installed these packages:
Microsoft.AspNetCore.Hosting
Microsoft.AspNetCore.Http
Microsoft.AspNetCore.Mvc
Microsoft.AspNetCore.Routing
Microsoft.AspNetCore.Routing.Abstractions
What else should I install?
But, methods like app.UseEndpoints(()=>), endpoints.MapControllers();or app.MapControllers(); don't exist in my environment.
This is a documentation issue, the Endpoint routing applies to ASP.NET Core 3.0 and later, instead of Asp.net Core 2.1 .
In Asp.net core 2.1 MVC application, you should use the UseMvc
middleware and the MapRoute()
method, the startup.cs file like this:
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.Configure<CookiePolicyOptions>(options =>
{
// This lambda determines whether user consent for non-essential cookies is needed for a given request.
options.CheckConsentNeeded = context => true;
options.MinimumSameSitePolicy = SameSiteMode.None;
});
services.AddDbContext<ApplicationDbContext>(options =>
options.UseSqlServer(
Configuration.GetConnectionString("DefaultConnection")));
services.AddDefaultIdentity<IdentityUser>()
.AddEntityFrameworkStores<ApplicationDbContext>();
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseCookiePolicy();
app.UseAuthentication();
app.UseMvc(routes =>
{
routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
});
}
}
If you want to use the Endpoint routing, you could migrate the application from Asp.net core 2.1 to Asp.net core 3.1. Refer to this link and steps .
For the documentation issue, you can submit a feedback by click the button at the end of the document:
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