demo2023/demo_2023/MainWindow.axaml.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Media.Imaging;
using Avalonia.Platform.Storage;
using Avalonia.Win32;
using demo_2023.Models;

namespace demo_2023;

public partial class MainWindow : Window
{
    ObservableCollection<Event> events = new ObservableCollection<Event>();
    List<Event> dataSourseEvent;

    public MainWindow()
    {
        InitializeComponent();
        using var context = new User15Context();

        dataSourseEvent = context.Events.ToList();
        EventListBox.ItemsSource = dataSourseEvent;
    }


    public class EventPresenter() : Event
    {
        Bitmap? image
        {
            get
            {
                try
                {
                    string absolutePath = Path.Combine(AppContext.BaseDirectory, Photo);
                    return new Bitmap(absolutePath);
                }
                catch
                {
                    return null;
                }
            }
        }
    }
    
    
    


    private void Jury_reg(object? sender, RoutedEventArgs e)
    {
        new Additem().ShowDialog(this);
    }

}