Culture Provider & Language Switch

// Add localization services
builder.Services.AddLocalization(options =>
    options.ResourcesPath = "Resources");

// Add FOD UI Components
builder.Services.AddFod();

// Add WASM-specific culture service
builder.Services.AddBlazorWasmCulture(options =>
{
    options.SupportedCultures = new List<string> { "en", "ro", "ru" };
    options.DefaultCulture = "en";
    options.DetectBrowserLanguage = true;
    options.StorageKey = "fod.culture";
});

// Initialize culture before running
var host = await builder.Build().UseCultureAsync();
await host.RunAsync();

// Add localization services
builder.Services.AddLocalization(options =>
    options.ResourcesPath = "Resources");

// Add FOD UI Components
builder.Services.AddFod();

// Add Server-specific culture service
builder.Services.AddBlazorServerCulture(options =>
{
    options.SupportedCultures = new List<string> { "en", "ro", "ru" };
    options.DefaultCulture = "en";
    options.DetectBrowserLanguage = true;
});

<FodCultureProvider>
    <Router AppAssembly="@typeof(App).Assembly">
        <Found Context="routeData">
            <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
        </Found>
    </Router>
</FodCultureProvider>

public interface ICultureService
{
    // Properties
    CultureContext Current { get; }                    // Current culture context
    CultureInfo CurrentCulture { get; }                // Current active culture
    IReadOnlyList<CultureInfo> SupportedCultures { get; } // All supported cultures

    // Events
    event Action<CultureContext>? OnCultureChanged;   // Culture change notification

    // Methods
    Task SetCultureAsync(string cultureCode);          // Change culture
    Task InitializeAsync();                            // Initialize (detect/load)
    CultureInfo GetCultureByCode(string? code);        // Lookup culture by code
}

@inject ICultureService CultureService

// Get current culture info
var current = CultureService.CurrentCulture;
var supported = CultureService.SupportedCultures;

// Change culture programmatically
await CultureService.SetCultureAsync("ro");

// Subscribe to culture changes
CultureService.OnCultureChanged += context =>
{
    Console.WriteLine($"Culture changed to: {context.LanguageCode}");
};

[CascadingParameter]
protected CultureContext? CultureContext { get; set; }

// Use in component
var langCode = CultureContext?.LanguageCode;
var nativeName = CultureContext?.NativeDisplayName;

public class MyCultureAwareComponent : CultureAwareComponentBase
{
    // Automatically re-renders when culture changes!

    // Override for custom logic on culture change
    protected override void OnCultureChanged(CultureContext context)
    {
        // Custom logic here
        Console.WriteLine($"Culture changed to: {context.LanguageCode}");
    }
}

Resources/
  Pages.LanguageSwitchDemo.resx       (default/fallback)
  Pages.LanguageSwitchDemo.en.resx    (English)
  Pages.LanguageSwitchDemo.ro.resx    (Romanian)
  Pages.LanguageSwitchDemo.ru.resx    (Russian)

@using Microsoft.Extensions.Localization
@inject IStringLocalizer<LanguageSwitchDemo> L

<h1>@L["Welcome"]</h1>
<p>@L["Description"]</p>

<!-- With parameters -->
<p>@L["Greeting", userName]</p>

<!-- For attributes -->
<FodTextField Label="@L["NameLabel"].Value" />

<FodLanguageSwitch Mode="LanguageSwitchMode.Inline" />

<FodLanguageSwitch Mode="LanguageSwitchMode.Dropdown" />

<FodLanguageSwitch
    Mode="LanguageSwitchMode.Dropdown"
    OnLanguageChanged="HandleChanged" />

@code {
    private void HandleChanged(CultureInfo culture)
    {
        Console.WriteLine($"Changed to: {culture.Name}");
    }
}