NotFound Page in Asp.net Core

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elahi1mahdi

Member

39 Points

197 Posts

NotFound Page in Asp.net Core

Apr 13, 2020 08:57 AM|elahi1mahdi|LINK

Hi,

i want design 404 page in my project and i have use culture root ,

my startup

 app.Use(async (context, next) =>
            {
                await next();
                if (context.Response.StatusCode == 404)
                {
                    context.Request.Path = "fa/error_404";
                    await next();
                }
            });

 app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();

                endpoints.MapControllerRoute(
                name: "areas",
                pattern: "{area:exists}/{controller=Home}/{action=Index}/{id?}");

                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{culture=fa}/{controller=Home}/{action=Index}/{id?}");



            });

 [Route("/error_404")]
        [Route("{culture}/error_404")]
        public async Task<IActionResult> AboutUs()
        {           
            return View();
        }

my default url is /fa

but when i search a not exsits url for example /fa/Jfejsfd its not got error_404 action and return not found

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Kulrom

Contributor

4232 Points

1147 Posts

Re: NotFound Page in Asp.net Core

Apr 13, 2020 09:13 AM|Kulrom|LINK

what happens if you disable status code pages?

statusCodePagesFeature.Enabled = false;

Remember to click Mark As Answer when you get a reply which answers your question.
My website: ASP.NET Custom Software Development

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elahi1mahdi

Member

39 Points

197 Posts

Re: NotFound Page in Asp.net Core

Apr 13, 2020 09:54 AM|elahi1mahdi|LINK

 app.Use(async (context, next) =>
            {
                var statusCodePagesFeature = context.Features.Get<IStatusCodePagesFeature>();
                if (statusCodePagesFeature != null)
                {
                    statusCodePagesFeature.Enabled = false;
                }
                await next();
                if (context.Response.StatusCode == 404)
                {
                    context.Request.Path = "/fa/about-us";
                    await next();
                }
            });

i replaced this code but not worked and show not found page

by the way when i replaced change route in startup to

   endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");

remove the culture and search not exsist page example: /iuiewjzxd its worked
but i want have culture route

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Rena Ni

Contributor

2720 Points

874 Posts

Re: NotFound Page in Asp.net Core

Apr 14, 2020 08:20 AM|Rena Ni|LINK

Hi elahi1mahdi,

You add route attribute on your action,so the default route template does not work:

[Route("/error_404")]
[Route("{culture}/error_404")]

Change like below:

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    else
    {
        app.UseExceptionHandler("/Home/Error");
        // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
        app.UseHsts();
    }
    app.Use(async (context, next) =>
    {
        var statusCodePagesFeature = context.Features.Get<IStatusCodePagesFeature>();
        if (statusCodePagesFeature != null)
        {
            statusCodePagesFeature.Enabled = false;
        }
        await next();
        if (context.Response.StatusCode == 404)
        {
            context.Request.Path = "/fa/error_404";
            await next();
        }
    });
    app.UseHttpsRedirection();
    app.UseStaticFiles();

    app.UseRouting();

    app.UseAuthorization();
          
    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllerRoute(
        name: "areas",
        pattern: "{area:exists}/{controller=Home}/{action=Index}/{id?}");

        endpoints.MapControllerRoute(
            name: "culture",
            pattern: "{culture=fa}/{controller=Home}/{action=Index}/{id?}");

    });
}

Best Regards,

Rena

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elahi1mahdi

Member

39 Points

197 Posts

Re: NotFound Page in Asp.net Core

Apr 15, 2020 10:38 AM|elahi1mahdi|LINK

i change it but its now worked

Reply

Rena Ni

Contributor

2720 Points

874 Posts

Re: NotFound Page in Asp.net Core

Apr 16, 2020 05:29 AM|Rena Ni|LINK

Hi elahi1mahdi,

elahi1mahdi
i change it but its now worked

So you do not get into the AboutUs action by using my code,right?What does the result you get?A default 404 page?

What is your controller like which contains the AboutUs action?Please share more details about the controller,for example,if it contains route attribute with culture or not.

I suggest that you could share your whole Startup.cs,due to the order of the middleware may cause the issue.

Best Regards,

Rena

.NET forums are moving to a new home on Microsoft Q&A, we encourage you to go to Microsoft Q&A for .NET for posting new questions and get involved today.

Reply

elahi1mahdi

Member

39 Points

197 Posts

Re: NotFound Page in Asp.net Core

Apr 16, 2020 06:14 AM|elahi1mahdi|LINK

i get a default 404 page
my problem with route culture
its my codes when i add route culture and cant find action

StartUp.cs

public void ConfigureServices(IServiceCollection services)
        {

            services.AddDbContext<ApplicationDbContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection"), c => c.MigrationsAssembly("DataLayer")));

            services.AddIdentity<ApplicationUser, ApplicationRole>(options =>
            {
                options.Password.RequiredLength = 6;
                options.Password.RequireLowercase = false;
                options.Password.RequireUppercase = false;
                options.Password.RequireNonAlphanumeric = false;
                options.Password.RequireDigit = false;
            })
                .AddEntityFrameworkStores<ApplicationDbContext>()
                .AddDefaultTokenProviders();

            //services.AddTransient<DbContextSeedData>();
            services.AddDistributedMemoryCache();

            services.AddSession(options =>
            {
                // Set a short timeout for easy testing.
                options.IdleTimeout = TimeSpan.FromDays(1);
                options.Cookie.HttpOnly = true;
                // Make the session cookie essential
                options.Cookie.IsEssential = true;
            });
            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;
            });
            // Add application services.
            services.AddLocalization(options => options.ResourcesPath = "Resources");
            services.AddControllersWithViews(options =>
            {
                options.Filters.Add(typeof(DynamicAuthorizationFilter));
            }).AddRazorRuntimeCompilation().AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix,
            options => options.ResourcesPath = "Resources"
           ).AddDataAnnotationsLocalization();

            services.AddBrowserDetection();
           


        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseDatabaseErrorPage();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
                app.UseHsts();

            }

            FileExtensionContentTypeProvider contentTypes = new FileExtensionContentTypeProvider();
            contentTypes.Mappings[".apk"] = "application/vnd.android.package-archive";

            app.UseHttpsRedirection();

            app.UseStaticFiles(new StaticFileOptions
            {
                OnPrepareResponse = context =>
                {
                    // Cache static file for 1 year
                    if (!string.IsNullOrEmpty(context.Context.Request.Query["v"]))
                    {
                        context.Context.Response.Headers.Add("cache-control", new[] { "public,max-age=31536000" });
                        context.Context.Response.Headers.Add("Expires", new[] { DateTime.UtcNow.AddYears(1).ToString("R") }); // Format RFC1123
                    }
                }
            });
            app.Use(async (context, next) =>
            {
                await next();
                if (context.Response.StatusCode == 404)
                {
                    context.Request.Path = "/fa/error_404";
                    await next();
                }
            });

            app.UseCookiePolicy();

            app.UseRouting();

            app.UseAuthentication();
            app.UseAuthorization();

            app.UseSession();
            //app.UseMiddleware<HandleCultureUrl>();

            var supportedCultures = new List<CultureInfo>()
            {
                new CultureInfo("fa"),
                new CultureInfo("en")
            };
            var options = new RequestLocalizationOptions()
            {
                DefaultRequestCulture = new RequestCulture("fa"),
                SupportedCultures = supportedCultures,
                SupportedUICultures = supportedCultures,
                RequestCultureProviders = new List<IRequestCultureProvider>()
                {
                    new QueryStringRequestCultureProvider(),
                    new CookieRequestCultureProvider()
                }

            };
            options.RequestCultureProviders.Insert(0, new RouteCultureProvider(options.DefaultRequestCulture));
        
          

            app.UseRequestLocalization(options);
           
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();

                endpoints.MapControllerRoute(
                name: "areas",
                pattern: "{area:exists}/{controller=Home}/{action=Index}/{id?}");

                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{culture=fa}/{controller=Home}/{action=Index}/{id?}");

             
                endpoints.MapRazorPages();


            });


        }
}

and my controller

 public class ErrorController : Controller
    {
        [Route("/fa/error4")]
        public async Task<IActionResult> Error_404()
        {
            return View();
        }

    }

its worked when i change to this codes

remove culture

 endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{culture=fa}/{controller=Home}/{action=Index}/{id?}");

and remove route attribute from error controller

 [Route("/fa/error4")]
        public async Task<IActionResult> Error_404()
        {
            return View();
        }

and change address in startup

 app.Use(async (context, next) =>
            {
                await next();
                if (context.Response.StatusCode == 404)
                {
                    context.Request.Path = "/Error/Error_404";
                    await next();
                }
            });

with this change and remove culture its woked but i want use culture

Reply

Rena Ni

Contributor

2720 Points

874 Posts

Re: NotFound Page in Asp.net Core

Apr 16, 2020 09:09 AM|Rena Ni|LINK

Hi elahi1mahdi,

Your route attribute is `[Route("/fa/error4")]`,why did you request the url like below:

context.Request.Path = "/fa/error_404";

It should be `/fa/error4`.

context.Request.Path = "/fa/error4";

What is your RouteCultureProvider?

Best Regards,

Rena

.NET forums are moving to a new home on Microsoft Q&A, we encourage you to go to Microsoft Q&A for .NET for posting new questions and get involved today.

Reply

elahi1mahdi

Member

39 Points

197 Posts

Re: NotFound Page in Asp.net Core

Apr 18, 2020 06:00 AM|elahi1mahdi|LINK

Thanks For Your Help

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