Program.cs

using FileManagerUj.Data;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
using Syncfusion.Blazor;
using System.Globalization;
using FileManagerUj.Shared;
using Microsoft.Extensions.Options;
using Microsoft.AspNetCore.Localization;
 using Newtonsoft.Json.Serialization;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddSyncfusionBlazor();
            builder.Services.AddSingleton(typeof(ISyncfusionStringLocalizer), typeof(SyncfusionLocalizer));
           var supportedCultures = new[] { "en-US", "de", "fr", "ar", "zh" };
var localizationOptions = new RequestLocalizationOptions()
    .SetDefaultCulture(supportedCultures[0])
    .AddSupportedCultures(supportedCultures)
    .AddSupportedUICultures(supportedCultures); 
builder.Services.AddRazorPages();
            builder.Services.AddControllers().AddNewtonsoftJson(options => { options.SerializerSettings.ContractResolver = new DefaultContractResolver(); });
builder.Services.AddServerSideBlazor();
builder.Services.AddSingleton<WeatherForecastService>();

var app = builder.Build();

// Configure the HTTP request pipeline.
app.UseRequestLocalization(localizationOptions);

if (!app.Environment.IsDevelopment())
{
	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.UseCors();

app.MapDefaultControllerRoute();
            app.MapControllers();
            app.MapBlazorHub();
app.MapFallbackToPage("/_Host");

app.Run();