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Add a sample demonstrating culture based selection for Razor Pages
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‎Entropy.sln

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Microsoft Visual Studio Solution File, Format Version 12.00
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 15
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VisualStudioVersion = 15.0.26730.12
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MinimumVisualStudioVersion = 10.0.40219.1
@@ -131,6 +131,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Mvc.CustomRazorPageHandlers
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EndProject
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Mvc.RazorPagePartial", "samples\Mvc.RazorPagePartial\Mvc.RazorPagePartial.csproj", "{D98E6BE8-F1A8-47E7-BC34-017825DCF24E}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Mvc.LocalizedRazorPages", "samples\Mvc.LocalizedRazorPages\Mvc.LocalizedRazorPages.csproj", "{507E3F7C-DB1A-4674-B542-BA33BAD419D8}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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{D98E6BE8-F1A8-47E7-BC34-017825DCF24E}.Release|x64.Build.0 = Release|Any CPU
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{D98E6BE8-F1A8-47E7-BC34-017825DCF24E}.Release|x86.ActiveCfg = Release|Any CPU
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{D98E6BE8-F1A8-47E7-BC34-017825DCF24E}.Release|x86.Build.0 = Release|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Debug|x64.ActiveCfg = Debug|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Debug|x64.Build.0 = Debug|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Debug|x86.ActiveCfg = Debug|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Debug|x86.Build.0 = Debug|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Release|Any CPU.Build.0 = Release|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Release|x64.ActiveCfg = Release|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Release|x64.Build.0 = Release|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Release|x86.ActiveCfg = Release|Any CPU
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8}.Release|x86.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
@@ -794,6 +808,7 @@ Global
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{8A61FA46-3FD4-42BE-80C6-E5931387590C} = {5BCA2B8A-37DA-4A88-A221-3D5B4796B07F}
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{C673D327-412E-45E6-A12F-A8D37551793F} = {8B204FB8-31A6-4559-AE7F-0412F504983C}
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{D98E6BE8-F1A8-47E7-BC34-017825DCF24E} = {5BCA2B8A-37DA-4A88-A221-3D5B4796B07F}
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{507E3F7C-DB1A-4674-B542-BA33BAD419D8} = {8B204FB8-31A6-4559-AE7F-0412F504983C}
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {5DF584CA-249D-432C-BBA9-4498414C8E97}

‎samples/Mvc.LocalizedRazorPages/Mvc.LocalizedRazorPages.csproj

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>netcoreapp2.1</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.AspNetCore.App" />
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</ItemGroup>
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</Project>

‎samples/Mvc.LocalizedRazorPages/PageCultureConvention.cs

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using System;
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using System.Diagnostics;
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using System.Globalization;
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using Microsoft.AspNetCore.Localization;
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using Microsoft.AspNetCore.Mvc.ActionConstraints;
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using Microsoft.AspNetCore.Mvc.ApplicationModels;
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namespace LocalizedRazorPages
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{
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public class PageCultureConvention : IPageRouteModelConvention
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{
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public void Apply(PageRouteModel model)
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{
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var path = model.ViewEnginePath;
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var lastSeparator = path.LastIndexOf('/');
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Debug.Assert(lastSeparator != -1);
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var lastDot = path.LastIndexOf('.', path.Length - 1, path.Length - lastSeparator);
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// /SomeFolder/MyPage.fr-FR -> fr-FR
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if (lastDot != -1)
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{
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var cultureName = path.Substring(lastDot + 1);
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var constraint = new CultureConstraint(new CultureInfo(cultureName));
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for (var i = model.Selectors.Count - 1; i >= 0; i--)
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{
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var selector = model.Selectors[i];
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selector.ActionConstraints.Add(constraint);
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var template = selector.AttributeRouteModel.Template;
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template = template.Substring(0, lastDot - 1);
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selector.AttributeRouteModel.Template = template;
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var fileName = template.Substring(lastSeparator);
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if (fileName == "Index")
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{
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selector.AttributeRouteModel.SuppressLinkGeneration = true;
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var indexSelector = new SelectorModel(selector);
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template = selector.AttributeRouteModel.Template.Substring(0, lastSeparator);
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indexSelector.AttributeRouteModel.Template = template;
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model.Selectors.Add(indexSelector);
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}
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}
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}
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}
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private class CultureConstraint : IActionConstraint
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{
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private readonly CultureInfo _culture;
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public CultureConstraint(CultureInfo culture)
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{
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_culture = culture;
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}
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public int Order => 0;
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public bool Accept(ActionConstraintContext context)
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{
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var feature = context.RouteContext.HttpContext.Features.Get<IRequestCultureFeature>();
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if (feature == null)
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{
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// The page is associated with a culture but the request is not.
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return false;
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}
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return string.Equals(feature.RequestCulture.Culture.Name, _culture.Name, StringComparison.OrdinalIgnoreCase);
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}
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}
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}
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}

‎samples/Mvc.LocalizedRazorPages/Pages/Index.cshtml

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@page
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@model IndexModel
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Neutral culture

‎samples/Mvc.LocalizedRazorPages/Pages/Index.cshtml.cs

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.AspNetCore.Mvc.RazorPages;
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namespace LocalizedRazorPages.Pages
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{
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public class IndexModel : PageModel
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{
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public void OnGet()
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{
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}
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}
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}

‎samples/Mvc.LocalizedRazorPages/Pages/Index.fr-FR.cshtml

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@page
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@model IndexModel
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French culture

‎samples/Mvc.LocalizedRazorPages/Pages/_ViewImports.cshtml

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@using LocalizedRazorPages
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@namespace LocalizedRazorPages.Pages
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@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

‎samples/Mvc.LocalizedRazorPages/Program.cs

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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Logging;
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namespace LocalizedRazorPages
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{
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public class Program
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{
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public static void Main(string[] args)
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{
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CreateWebHostBuilder(args).Build().Run();
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}
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public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
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WebHost.CreateDefaultBuilder(args)
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.UseStartup<Startup>();
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}
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}

‎samples/Mvc.LocalizedRazorPages/Startup.cs

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.HttpsPolicy;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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namespace LocalizedRazorPages
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{
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public class Startup
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{
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public Startup(IConfiguration configuration)
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{
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Configuration = configuration;
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}
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public IConfiguration Configuration { get; }
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// This method gets called by the runtime. Use this method to add services to the container.
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public void ConfigureServices(IServiceCollection services)
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{
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services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1)
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.AddRazorPagesOptions(options =>
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{
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options.Conventions.Add(new PageCultureConvention());
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});
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}
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// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
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public void Configure(IApplicationBuilder app, IHostingEnvironment env)
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{
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if (env.IsDevelopment())
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{
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app.UseDeveloperExceptionPage();
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}
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else
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{
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app.UseExceptionHandler("/Error");
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app.UseHsts();
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}
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app.UseRequestLocalization(options =>
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{
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var supportedCultures = new[] { "en-US", "fr-FR" };
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options.AddSupportedCultures(supportedCultures);
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options.AddSupportedUICultures(supportedCultures);
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});
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app.UseHttpsRedirection();
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app.UseStaticFiles();
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app.UseCookiePolicy();
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app.UseMvc();
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}
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}
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}

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