Program.cs

using OrganizationalChart;
using OrganizationalChart.Components;
using Syncfusion.Blazor;
using OrganizationalChart.Shared;
using Microsoft.AspNetCore.Localization;
using System.Globalization;
using Syncfusion.Blazor.Popups;
using Microsoft.Extensions.Options;
var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorComponents()
    .AddInteractiveServerComponents();
builder.Services.AddSignalR(e =>
            {
                e.MaximumReceiveMessageSize = 102400000;
            });
builder.Services.AddRazorPages();
builder.Services.AddScoped<SfDialogService>();
builder.Services.AddSyncfusionBlazor();
builder.Services.AddScoped<SampleService>();
            // Register the Syncfusion locale service to customize the SyncfusionBlazor component locale culture
            //services.AddSingleton(typeof(ISyncfusionStringLocalizer), typeof(SyncfusionLocalizer));
builder.Services.Configure<RequestLocalizationOptions>(options =>
            {
                // Define the list of cultures your app will support
                List<CultureInfo> supportedCultures = new List<CultureInfo>()
                {
                    new CultureInfo("en-US"),
                    new CultureInfo("de"),
                    new CultureInfo("fr"),
                    new CultureInfo("ar"),
                    new CultureInfo("zh"),
                };
                // Set the default culture
                options.DefaultRequestCulture = new RequestCulture("en-US");
                options.SupportedCultures = supportedCultures;
                options.SupportedUICultures = supportedCultures;
            });
var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error", createScopeForErrors: true);
    // 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.UseAntiforgery();

app.MapRazorComponents<App>()
    .AddInteractiveServerRenderMode();

app.Run();