AvaloniaProject/AvaloniaApplication4/Views/StartPage.axaml.cs

using Avalonia.Controls;
using AvaloniaApplication4.Models;
using AvaloniaApplication4.ViewModels;

namespace AvaloniaApplication4.Views
{
    public partial class StartPage : UserControl
    {
        public StartPage(User? user)
        {
            DataContext = new StartPageViewModel(user);
            InitializeComponent();
        }
    }
}