Program.cs

using GetStartedWithTreeList.Components;
using GetStartedWithTreeList.Services;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorComponents()
    .AddInteractiveServerComponents()
    .AddInteractiveWebAssemblyComponents();

builder.Services.AddDevExpressBlazor(options => {
    options.SizeMode = DevExpress.Blazor.SizeMode.Medium;
});
builder.Services.AddSingleton<EmployeeTaskService>();
builder.Services.AddMvc();

var app = builder.Build();

// Configure the HTTP request pipeline.
if(app.Environment.IsDevelopment()) {
    app.UseWebAssemblyDebugging();
} else {
    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()
    .AddInteractiveWebAssemblyRenderMode();


app.Run();