<FluentToastProvider />
<FluentDialogProvider />
<FluentMessageBarProvider />
<FluentTooltipProvider />
<FluentKeyCodeProvider />

builder.Services.AddFluentUIComponents();

// Or with configuration:
builder.Services.AddFluentUIComponents(options =>
{
    options.UseTooltipServiceProvider = true;  // default: true
    options.ServiceLifetime = ServiceLifetime.Scoped; // default
});

dotnet add package Microsoft.FluentUI.AspNetCore.Components.Icons

@using Icons = Microsoft.FluentUI.AspNetCore.Components.Icons

<FluentIcon Value="@(Icons.Regular.Size24.Save)" />
<FluentIcon Value="@(Icons.Filled.Size20.Delete)" Color="@Color.Error" />

<FluentSelect Items="@countries"
              OptionText="@(c => c.Name)"
              OptionValue="@(c => c.Code)"
              @bind-SelectedOption="@selectedCountry"
              Label="Country" />

@* WRONG — do not use InputSelect pattern *@
<FluentSelect @bind-Value="@selectedValue">
    <option value="1">One</option>
</FluentSelect>

<FluentAutocomplete TOption="Person"
                    OnOptionsSearch="@OnSearch"
                    OptionText="@(p => p.FullName)"
                    @bind-SelectedOptions="@selectedPeople"
                    Label="Search people" />

@code {
    private void OnSearch(OptionsSearchEventArgs<Person> args)
    {
        args.Items = allPeople.Where(p =>
            p.FullName.Contains(args.Text, StringComparison.OrdinalIgnoreCase));
    }
}

public partial class EditPersonDialog : IDialogContentComponent<Person>
{
    [Parameter] public Person Content { get; set; } = default!;

    [CascadingParameter] public FluentDialog Dialog { get; set; } = default!;

    private async Task SaveAsync()
    {
        await Dialog.CloseAsync(Content);
    }

    private async Task CancelAsync()
    {
        await Dialog.CancelAsync();
    }
}

[Inject] private IDialogService DialogService { get; set; } = default!;

private async Task ShowEditDialog()
{
    var dialog = await DialogService.ShowDialogAsync<EditPersonDialog, Person>(
        person,
        new DialogParameters
        {
            Title = "Edit Person",
            PrimaryAction = "Save",
            SecondaryAction = "Cancel",
            Width = "500px",
            PreventDismissOnOverlayClick = true,
        });

    var result = await dialog.Result;
    if (!result.Cancelled)
    {
        var updatedPerson = result.Data as Person;
    }
}

await DialogService.ShowConfirmationAsync("Are you sure?", "Yes", "No");
await DialogService.ShowSuccessAsync("Done!");
await DialogService.ShowErrorAsync("Something went wrong.");

[Inject] private IToastService ToastService { get; set; } = default!;

ToastService.ShowSuccess("Item saved successfully");
ToastService.ShowError("Failed to save");
ToastService.ShowWarning("Check your input");
ToastService.ShowInfo("New update available");

<FluentDesignTheme Mode="DesignThemeModes.System"
                   OfficeColor="OfficeColor.Teams"
                   StorageName="mytheme" />

<EditForm Model="@model" OnValidSubmit="HandleSubmit">
    <DataAnnotationsValidator />
    <FluentTextField @bind-Value="@model.Name" Label="Name" Required />
    <FluentSelect Items="@options"
                  OptionText="@(o => o.Label)"
                  @bind-SelectedOption="@model.Category"
                  Label="Category" />
    <FluentValidationSummary />
    <FluentButton Type="ButtonType.Submit" Appearance="Appearance.Accent">Save</FluentButton>
</EditForm>