DemoService/ServiceWindow.axaml.cs

using Avalonia;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using DemoService.Models;

namespace DemoService;

public partial class ServiceWindow : Window
{
    private readonly bool AdminMode;
    public ServiceWindow()
    {
        InitializeComponent();
        ServicesListBox.ItemsSource = Utils.Context.Services;
    }
    public ServiceWindow(bool admin)
    {
        InitializeComponent();
        AdminMode = admin;
        if (!admin)
        {
            AddButton.IsVisible = false;
        }
        ServicesListBox.ItemsSource = Utils.Context.Services;
        foreach (var service in ServicesListBox.ItemsSource)
        {

        }
    }
    public void AddButtonClick(object sender, RoutedEventArgs args)
    {
        AddEditWindow addEditWindow = new();
        addEditWindow.Show();
        Close();
    }
    private decimal? CostAfterDiscount(decimal previousCost, decimal? discount)
    {
        if (discount.HasValue || discount != 0)
        {
            decimal actualCost = previousCost - previousCost * discount.Value;
            return actualCost;
        }
        return null;
    }
}