Bands¶

//MainWindow.axaml.cs file
using Avalonia.Controls;
using Eremex.AvaloniaUI.Controls.Common;
using TreeListColumnBands.ViewModels;

namespace TreeListColumnBands.Views;
public partial class MainWindow : MxWindow
{
    public MainWindow()
    {
        this.DataContext = new MainWindowViewModel();
        InitializeComponent();
        employeeTreeList.Loaded += EmployeeTreeList_Loaded;
    }

    private void EmployeeTreeList_Loaded(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
    {
        employeeTreeList.ExpandAllNodes();
    }
}

//MainWindowViewModel.cs file
using System.Collections.Generic;
using System;
using CommunityToolkit.Mvvm.ComponentModel;
using System.Collections.ObjectModel;

namespace TreeListColumnBands.ViewModels;
public partial class MainWindowViewModel : ViewModelBase
{
    public MainWindowViewModel()
    {            
        Employees = EmployeeDataGenerator.GenerateData();
    }
    [ObservableProperty]
    public ObservableCollection<Employee> employees = new();
}
public partial class Employee : ObservableObject
{
    [ObservableProperty]
    public string name;

    [ObservableProperty]
    public string position;

    [ObservableProperty]
    public DateTime birthDate;

    [ObservableProperty]
    public string address;

    [ObservableProperty]
    public string city;

    [ObservableProperty]
    public string country;

    [ObservableProperty]
    public string phone;

    [ObservableProperty]
    public string email;

    [ObservableProperty]
    public DateTime hireDate;

    [ObservableProperty]
    public decimal salary;

    [ObservableProperty]
    public ObservableCollection<Employee> subordinates;

    public Employee(string name, string position, DateTime birthDate,
                   string address, string city, string country,
                   string phone, string email, DateTime hireDate,
                   decimal salary)
    {
        Name = name;
        Position = position;
        BirthDate = birthDate;
        Address = address;
        City = city;
        Country = country;
        Phone = phone;
        Email = email;
        HireDate = hireDate;
        Salary = salary;
        Subordinates = null;
    }
    public void AddSubordinate(Employee subordinate)
    {
        if (Subordinates == null)
            Subordinates = new();
        Subordinates.Add(subordinate);
    }
    public bool HasSubordinates => Subordinates?.Count > 0;
}
public static class EmployeeDataGenerator
{
    public static ObservableCollection<Employee> GenerateData()
    {
        var ceo = new Employee(
            "John Smith", "CEO", new DateTime(1972, 8, 10), "1 Financial District",
            "Riyadh", "Saudi Arabia", "+966 11 123 4567", "j.smith@company.sa", 
            new DateTime(2011, 3, 15), 320000m);
        var vpTech = new Employee(
            "Wei Chen", "VP of Technology", new DateTime(1980, 5, 22), "22 Innovation Park",
            "Shanghai", "China", "+86 21 8765 4321", "w.chen@company.cn", 
            new DateTime(2013, 6, 20), 240000m);
        var devManager = new Employee(
            "Raj Pat", "Development Manager", new DateTime(1985, 11, 30), "33 Tech Corridor",
            "Bangalore", "India", "+91 80 2345 6789", "r.pat@company.in", 
            new DateTime(2016, 4, 10), 160000m);
        var seniorDev = new Employee(
            "Hannah Zhang", "Senior Developer", new DateTime(1990, 3, 12), "44 Code Avenue",
            "Casablanca", "Morocco", "+212 522 987 654", "h.zhang@company.ma", 
            new DateTime(2018, 7, 15), 95000m);
        var juniorDev = new Employee(
            "Lillian Oni", "Junior Developer", new DateTime(1994, 9, 25), "55 Debug Street",
            "Lagos", "Nigeria", "+234 1 345 6789", "l.oni@company.ng", 
            new DateTime(2020, 2, 20), 65000m);
        var cfo = new Employee(
            "Marianne Lockwood", "CFO", new DateTime(1978, 4, 18), "66 Finance Plaza",
            "Ho Chi Minh City", "Vietnam", "+84 28 7654 3210", "m.lock@company.vn", 
            new DateTime(2014, 9, 12), 280000m);
        var financeManager = new Employee(
            "Joanna Bennett", "Finance Manager", new DateTime(1983, 7, 8), "77 Capital Road",
            "Kuala Lumpur", "Malaysia", "+60 3 4567 8901", "j.ben@company.my", 
            new DateTime(2017, 1, 5), 140000m);
        ceo.AddSubordinate(vpTech);
        vpTech.AddSubordinate(devManager);
        devManager.AddSubordinate(seniorDev);
        seniorDev.AddSubordinate(juniorDev);
        ceo.AddSubordinate(cfo); 
        cfo.AddSubordinate(financeManager);
        ObservableCollection<Employee> employees = new ObservableCollection<Employee>();
        employees.Add(ceo);
        return employees;
    }
}

public partial class Order : ObservableObject
{
    [ObservableProperty]
    [property: Display(Order = 0, GroupName = "Order")]
    private int orderId;
    //...
}

public partial class Order : ObservableObject
{
    [ObservableProperty]
    [property: Display(Order = 20, GroupName = "Shipping Info/Address")]
    private string shipCountry = string.Empty;
    //...
}