Diagnostics

If localization issues require diagnosis, the reference for localization can be acquired in Program.cs.

IHostBuilder hostBuilder = CreateHostBuilder(args);
IHost host = hostBuilder.Build();
ILocalization localization = (ILocalization)host.Services.GetService(typeof(ILocalization));

Following snippet in Program.cs prints accessible localization lines.

var app = builder.Build();

// Localization diagnostics
{
    // Get localization context
    ILocalization localization = app.Services.GetService<ILocalization>()!;
    // Get logger
    ILogger logger = app.Services.GetService<ILogger<Program>>()!;
    // Print lines that are visible to localization
    if (localization.LineQueryCached.TryGetValue((null, null), out IEnumerable<IEnumerable<KeyValuePair<string, MarkedText>>> lines))
    {
        foreach (var line in lines)
        {
            // Read values
            line.ReadValues(out MarkedText pluralRules, out MarkedText culture, out MarkedText key, out MarkedText plurals, out MarkedText template, out MarkedText text);
            // No value
            if (!key.HasValue || !text.HasValue) continue;
            // Log
            logger.LogInformation("Culture={Culture}, Key={Key}, Text={Text}, Template={Template}, PluralRules={PluralRules}, Plurals={Plurals}", culture.Text, key.Text, text.Text, template.Text, pluralRules.Text, plurals.Text);
        }
    }
}