namedclientmodel.cs

public class NamedClientModel : PageModel
{
    private readonly IHttpClientFactory _clientFactory;

    public IEnumerable<Employee> Employees { get; private set; }

    public bool GetEmployeesError { get; private set; }

    public bool HasEmployees => Employees.Any();

    public NamedClientModel(IHttpClientFactory clientFactory)
    {
        _clientFactory = clientFactory;
    }

    public async Task OnGet()
    {
        var request = new HttpRequestMessage(HttpMethod.Get,
            "employees/getall");

        var client = _clientFactory.CreateClient("example");

        var response = await client.SendAsync(request);

        if (response.IsSuccessStatusCode)
        {
            using var responseStream = await response.Content.ReadAsStreamAsync();
            Employees = await JsonSerializer.DeserializeAsync
                    <IEnumerable<Employee>>(responseStream);
        }
        else
        {
            GetEmployeesError = true;
            Employee = Array.Empty<Employees>();
        }
    }
}