Using Localization with DataAnnotation where do you put the ressources file and how to access it

Question

I am using .Net Core 8

I succeed to use StringLocalizer and HtmlstringLocalizer

I want to localized DataAnnotation the

[Display(Name = "PhotoEpisode")] and the error message

[Required(ErrorMessage = "Le sous-titre de l'épisode est requis.")]

In program.cs I add

builder.Services.AddLocalization(options => options.ResourcesPath = "Resources");
builder.Services
	.AddMvc()
	.AddDataAnnotationsLocalization(
		options =>
		{
			options.DataAnnotationLocalizerProvider =
				(type, factory) =>
				{
					var assemblyName =
						new AssemblyName(
							typeof(SharedResources)
									.GetTypeInfo()
									.Assembly.FullName!);
					return factory.Create("SharedResource", assemblyName.Name!);
				};
		});

I I add the ressource file there

In my .ress file

PhotoEpisode	Photo depicting the episode

In my DTO

		/// <summary>
		/// Le record contenant la photo associé à l'épisode
		/// </summary>
		[Display(Name = "PhotoEpisode")]
		public Photo? PhotoEpisode { get; set; }

In my Razor view page

				
<div class="w-25">
	<label asp-for="PhotoEpisode" class="form-label pt"></label>
</div>

Answer 1

Hi @Boucourt,

Firstly, you may misspell the word, it should be typeof(SharedResource) instead of typeof(SharedResources).

Be sure configure the localization in Program.cs like below:

builder.Services.AddLocalization(options => options.ResourcesPath = "Resources");
builder.Services
    .AddMvc()
    .AddDataAnnotationsLocalization(
        options =>
        {
            options.DataAnnotationLocalizerProvider =
                (type, factory) =>
                {
                    var assemblyName =
                        new AssemblyName(
                            typeof(SharedResource)
                                    .GetTypeInfo()
                                    .Assembly.FullName!);
                    return factory.Create("SharedResource", assemblyName.Name!);
                };
        });
var app = builder.Build();
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
var supportedCultures = new[]
{
    new CultureInfo("en-US"), // Default culture
    new CultureInfo("fr-CA"), // French culture
    // Add more cultures as needed
};
app.UseRequestLocalization(new RequestLocalizationOptions
{
    DefaultRequestCulture = new RequestCulture("en-US"),
    SupportedCultures = supportedCultures,
    SupportedUICultures = supportedCultures
});
app.UseAuthorization();
app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Home}/{action=Index}/{id?}");
app.Run();

If the.resx file content which you shared in the question is SharedResource.fr-CA.resx. You need send request https://localhost:portNumber/xxx?culture=fr-CA. The label will display the value:Photo depicting the episode.

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Best regards,
Rena