How to navigate in a WPF Blazor Hybrid app

I created a WPF Blazor Hybrid app using the tutorial:https://learn.microsoft.com/en-us/aspnet/core/blazor/hybrid/tutorials/wpf?view=aspnetcore-8.0

The app's working fine and is starting with a Razor-Page, that is stored into /Pages/Overview.razor

How to navigate to another page like /Pages/Details.razor ?I tried navigation manager, but the link or button I create didn't do anything

Overview.razor

@inject NavigationManager navManager<h3>Overview</h3><button @onclick="NavigateToDetails">klick me</button>

Overview.razor.cs

namespace Accounting.Pages{    public partial class Overview    {        private void NavigateToDetails()        {            navManager.NavigateTo("/Details");        }    }}

(also tried /Pages/Details)