ASP.NET Core 3.1 MVC 中的本地化

我正在尝试将本地化添加到我的 ASP.NET Core 3.1 MVC 项目中，遗憾的是我找不到任何文章或教程来展示如何以简单的方式完成此操作。

每个人都有一些我无法理解的问题。

谁能告诉我一个简单的方法来做到这一点？ 好的，我尝试执行syncfusion.com/blogs/post/...，但我遇到了一个问题（options.RequestCultureProviders = new[] { new RouteDataRequestCultureProvider { IndexOfCulture = 1, IndexofUICulture = 1 } };）它说 RequestCultureProviders 不没有 IndexofUICulture......

我已经达到这个水平了：

    @using Microsoft.AspNetCore.Localization
@using Microsoft.Extensions.Localization 
@using System.Resources 
@model Index
@inject IStringLocalizer<Index> localizer 
@inject IHtmlLocalizer<Index> htmlLocalizer
@{
    ViewData["Title"] = "M-POS";
    //Microsoft.AspNetCore.Localization.IRequestCultureFeature requestCultureFeature;
    var requestCulture = CultureInfo.CurrentCulture;
    

}
    <div class="text-center">
        <h1 class="display-4">@localizer["Welcome"]</h1>
        <p>@localizer["Learn"]</p>


        <table class="table culture-table">
            <tr>
                <td style="width:50%;">Culture</td>
                <td>@requestCulture.DisplayName {@requestCulture.Name}</td>
            </tr>
            <tr>
                <td>UI Culture</td>
                <td>@requestCulture.Name</td>
            </tr>
            <tr>
                <td>UICulture Parent</td>
                <td>@requestCulture.Parent</td>
            </tr>
            <tr>
                <td>Date</td>
                <td>@DateTime.Now.ToLongDateString()</td>
            </tr>
            <tr>
                <td>Currency</td>
                <td>
                    @(12345.00.ToString("c"))
                </td>
            </tr>
            <tr>
                <td>Currency</td>
                <td>
                    @(12345.00.ToString("c"))
                </td>
            </tr>
            <tr>
                <td>Number</td>
                <td>
                    @(123.45m.ToString("F2"))
                </td>
            </tr>
        </table>
    </div>

然后我有一个名为 Resources 的文件夹，该文件夹内有一个名为 Resource.resx 和 Resource.en-US.resx 的文件 StartUp.cs 文件是这样的：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.UI;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.EntityFrameworkCore;
using POS3.Data;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Models;
using Microsoft.AspNetCore.Identity.UI.Services;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc.Authorization;
using Microsoft.AspNetCore.Mvc.Razor;
using System.Globalization;
using Microsoft.AspNetCore.Localization;
using Microsoft.Extensions.Options;
using Microsoft.AspNetCore.Localization.Routing;
using Microsoft.AspNetCore.Routing;
using Microsoft.CodeAnalysis.Options;

using Microsoft.AspNetCore.Http;
using System.Xml.Linq;

namespace POS3
{
    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.AddDbContext<ApplicationDbContext>(options =>
              options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

            services.AddDefaultIdentity<UserAccount>()
                .AddRoles<IdentityRole>()
                .AddEntityFrameworkStores<ApplicationDbContext>();

            services.AddRazorPages();
            //localization startup

            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            services.AddLocalization(options => options.ResourcesPath = "Resources");
            services.AddMvc().AddViewLocalization();
            services.AddMvc()
            .AddViewLocalization(options => options.ResourcesPath = "Resources")
            .AddDataAnnotationsLocalization();

            

            services.Configure<RequestLocalizationOptions>(options =>
            {
                var supportedCultures = new[]
                 {
                    
                    new CultureInfo("ar-SA"),
                    new CultureInfo("en-US")
                };
                options.DefaultRequestCulture = new RequestCulture("en-US");
                options.SupportedCultures = supportedCultures;
                options.SupportedUICultures = supportedCultures;
            });

            //services.Configure<RequestLocalizationOptions>(options =>
            //{
            //    var supportedCultures = new[]
            //    {
            //    new CultureInfo("en-US"),
            //    new CultureInfo("ar-SA"),
            //    new CultureInfo("es"),
            //};

            //    options.DefaultRequestCulture = new RequestCulture("en-US");
            //    options.SupportedCultures = supportedCultures;
            //    options.SupportedCultures = supportedCultures;
            //    //options.RequestCultureProviders = new[] { new RouteDataRequestCultureProvider { IndexOfCulture = 1, IndexOfCulture = 1 } };
            //});




            services.AddMvcCore();
            services.AddAuthorization(options => {
                options.AddPolicy("readonlypolicy",
                    builder => builder.RequireRole("Admin", "Manager", "Cashier", "User", "Super User"));
                options.AddPolicy("writepolicy",
                    builder => builder.RequireRole("Admin", "Manager", "Super User"));
            });

            

              


            services.Configure<IdentityOptions>(options =>
            {
                // Default Password settings.
                options.Password.RequireDigit = false;
                options.Password.RequiredLength = 6;
                options.Password.RequiredUniqueChars = 1;
                options.Password.RequireNonAlphanumeric = false;
                options.Password.RequireUppercase = false;
                options.Password.RequireLowercase = false;
            });

            services.AddControllersWithViews();
            services.AddRazorPages();
            services.AddControllers(config =>
            {
                
                var policy = new AuthorizationPolicyBuilder()
                                 .RequireAuthenticatedUser()
                                 .Build();
                config.Filters.Add(new AuthorizeFilter(policy));
            });

            services.Configure<PasswordHasherOptions>(options =>
            options.CompatibilityMode = PasswordHasherCompatibilityMode.IdentityV2
            );
            


            //services.AddSingleton<IEmailSender, EmailSender>();
        }

        // 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");
                // 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.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseRouting();

            //configer localization
            


            var localizationOptions = app.ApplicationServices.GetService<IOptions<RequestLocalizationOptions>>().Value;
            app.UseRequestLocalization(localizationOptions);

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

           
        }
    }
}

现在我看不到 resources.en-US.resx 文件值，我想我错过了一些东西。

Q1：这个问题（options.RequestCultureProviders = new[] { new RouteDataRequestCultureProvider { IndexOfCulture = 1, IndexofUICulture = 1 } };）它说RequestCultureProviders没有IndexofUICulture......

下载样品 https://github.com/RaguMP/Samples你会找到RouteDataRequestCultureProvider.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Localization;

namespace LocalizationSampleSingleResxFile
{
    public class RouteDataRequestCultureProvider : RequestCultureProvider
    {
        public int IndexOfCulture;
        public int IndexofUICulture;

        public override Task<ProviderCultureResult> DetermineProviderCultureResult(HttpContext httpContext)
        {
            if (httpContext == null)
                throw new ArgumentNullException(nameof(httpContext));

            string culture = null;
            string uiCulture = null;

            culture = uiCulture = httpContext.Request.Path.Value.Split('/')[IndexOfCulture]?.ToString();

            var providerResultCulture = new ProviderCultureResult(culture, uiCulture);

            return Task.FromResult(providerResultCulture);
        }
    }
}

Q2：更改资源名称

You already named en-US, so your resource file name must format with en-US.

Index.cshtml:

Screenshots of test:

ASP.NET Core 中的全球化和本地化 https://learn.microsoft.com/en-us/aspnet/core/fundamentals/localization?view=aspnetcore-3.1
将本地化添加到 ASP.NET Core 应用程序 https://andrewlock.net/adding-localisation-to-an-asp-net-core-application/
如何在 ASP.NET Core Web API 中使用本地化 https://www.syncfusion.com/blogs/post/how-to-use-localization-in-an-asp-net-core-web-api.aspx