【发布时间】：2021-01-15 16:56:28
【问题描述】：
我必须在 ASP.NET Core MVC 3.1 的应用程序中实现本地化。我能够本地化模型验证和视图。但是，我无法本地化模型验证的身份页面。为了实现本地化，我在 startup.cs 文件中进行了如下更改：
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.AddLocalization(opt => { opt.ResourcesPath = "Resources"; });
services.Configure<RequestLocalizationOptions>(options =>
{
var supportedCultures = new List<CultureInfo>
{
new CultureInfo("en-GB"),
new CultureInfo("da-DK")
};
options.DefaultRequestCulture = new RequestCulture("en-GB");
options.SupportedCultures = supportedCultures;
options.SupportedUICultures = supportedCultures;
options.RequestCultureProviders.Clear();
options.RequestCultureProviders.Add(new LocalizationDemoCultureProvider());
});
services.AddDbContext<LocalizationDemoDbContext>(options =>
options.UseSqlServer(
Configuration.GetConnectionString("LocalizationDemoDbContextConnection")));
services.AddDefaultIdentity<ApplicationUser>(options =>
{
options.SignIn.RequireConfirmedAccount = true;
options.Password.RequireLowercase = true;
options.Password.RequireUppercase = true;
options.Password.RequireNonAlphanumeric = true;
options.Password.RequireDigit = true;
options.Password.RequiredLength = 8;
}).AddRoles<IdentityRole>()
.AddEntityFrameworkStores<LocalizationDemoDbContext>();
services.AddControllersWithViews()
.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)
.AddDataAnnotationsLocalization();
services.AddRazorPages().AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)
.AddDataAnnotationsLocalization();
}
// 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();
}
else
{
app.UseExceptionHandler("/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();
app.UseAuthentication();
app.UseAuthorization();
app.UseRequestLocalization(app.ApplicationServices.GetRequiredService<IOptions<RequestLocalizationOptions>>().Value);
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
endpoints.MapRazorPages();
});
}
}
我的 LocalizationDemoCultureProvider.cs 类如下：
public class LocalizationDemoCultureProvider : RequestCultureProvider
{
public override async Task<ProviderCultureResult> DetermineProviderCultureResult(HttpContext httpContext)
{
await Task.Yield();
CultureInfo cultureInfoToSet = null;
cultureInfoToSet = GetRequestCultureById(1); // The Id values come from database in the real application
if (cultureInfoToSet != null)
{
return new ProviderCultureResult(cultureInfoToSet.Name);
}
return null;
}
private CultureInfo GetRequestCultureById(int Id)
{
CultureInfo cultureInfo = null;
if (Id == 1)
{
cultureInfo = new CultureInfo("da-DK");
}
else if (Id == 2)
{
cultureInfo = new CultureInfo("en-GB");
}
return cultureInfo;
}
}
在此之后，我可以在 IViewLocalizer 的帮助下获取 Views 中的资源键。例如，其中一个视图是 Create.cshtml，如下所示：
@inject Microsoft.AspNetCore.Mvc.Localization.IViewLocalizer localizer
@model LocalizationDemo.Models.EmployeeViewModel
@{
ViewData["Title"] = "Create";
}
<h1>@localizer["EmployeeCreate"]</h1>
<hr />
<div class="row">
<div class="col-md-4">
<form asp-action="Create">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
<div class="form-group">
<label asp-for="FirstName" class="control-label"></label>
<input asp-for="FirstName" class="form-control" />
<span asp-validation-for="FirstName" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="LastName" class="control-label"></label>
<input asp-for="LastName" class="form-control" />
<span asp-validation-for="LastName" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="Salary" class="control-label"></label>
<input asp-for="Salary" class="form-control" />
<span asp-validation-for="Salary" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="DOB" class="control-label"></label>
<input asp-for="DOB" class="form-control" />
<span asp-validation-for="DOB" class="text-danger"></span>
</div>
<div class="form-group">
<input type="submit" value="Create" class="btn btn-primary" />
</div>
</form>
</div>
</div>
<div>
<a asp-action="Index">@localizer["BackToList"]</a>
</div>
@section Scripts {
@{await Html.RenderPartialAsync("_ValidationScriptsPartial");}
}
我的EmployeeViewModel.cs如下添加DataAnnotations：
public class EmployeeViewModel
{
[Required(ErrorMessage ="FirstNameErrorMessage")]
[Display(Name ="FirstName")]
public string FirstName { get; set; }
[Required(ErrorMessage = "LastNameErrorMessage")]
[Display(Name = "LastName")]
public string LastName { get; set; }
[Required(ErrorMessage = "SalaryErrorMessage")]
[Display(Name = "Salary"), DisplayFormat(DataFormatString = "{0:n}")]
public decimal Salary { get; set; }
[Required(ErrorMessage = "DOBErrorMessage")]
[Display(Name = "DOB"), DisplayFormat(DataFormatString = "{0:MMMM dd, yyyy}")]
public DateTime DOB { get; set; }
}
这工作正常，但是当我根据登录页面的文件夹结构为身份页面添加资源文件时，DataAnnotations 不起作用。我需要一些帮助，因为我被困在这里。请帮忙。
【问题讨论】：
标签： asp.net-core asp.net-core-mvc