ShrlAlgoToolkit/WPFUIAPP/ViewModel.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using CommunityToolkit.Mvvm.ComponentModel;

namespace WPFUIAPP
{
    public partial class ViewModel : ObservableObject
    {
        [ObservableProperty]
        private ObservableCollection<Staff> staffList = [];

        public ViewModel()
        {
            InitNode1Value();
        }
        public void InitNode1Value()
        {
            Staff staff = new Staff()
            {
                Name = "Alice",
                Age = 30,
                Sex = "Male",
                Duty = "Manager",
                IsExpanded = true
            };
            Staff staff2 = new Staff()
            {
                Name = "Alice1",
                Age = 21,
                Sex = "Male",
                Duty = "Normal",
                IsExpanded = true
            };
            Staff staff3 = new Staff()
            {
                Name = "Alice11",
                Age = 21,
                Sex = "Male",
                Duty = "Normal"
            };
            staff2.StaffList.Add(staff3);
            staff3 = new Staff()
            {
                Name = "Alice22",
                Age = 21,
                Sex = "Female",
                Duty = "Normal"
            };
            staff2.StaffList.Add(staff3);
            staff.StaffList.Add(staff2);
            staff2 = new Staff()
            {
                Name = "Alice2",
                Age = 22,
                Sex = "Female",
                Duty = "Normal"
            };
            staff.StaffList.Add(staff2);
            staff2 = new Staff()
            {
                Name = "Alice3",
                Age = 23,
                Sex = "Female",
                Duty = "Normal"
            };
            staff.StaffList.Add(staff2);
            StaffList.Add(staff);

            staff = new Staff()
            {
                Name = "Bob",
                Age = 31,
                Sex = "Male",
                Duty = "CEO"
            };
            staff2 = new Staff()
            {
                Name = "Bob1",
                Age = 24,
                Sex = "Female",
                Duty = "Normal"
            };
            staff.StaffList.Add(staff2);
            staff2 = new Staff()
            {
                Name = "Bob2",
                Age = 25,
                Sex = "Female",
                Duty = "Normal"
            };
            staff.StaffList.Add(staff2);
            staff2 = new Staff()
            {
                Name = "Bob3",
                Age = 26,
                Sex = "Male",
                Duty = "Normal"
            };
            staff.StaffList.Add(staff2);
            StaffList.Add(staff);

            staff = new Staff()
            {
                Name = "Cyber",
                Age = 32,
                Sex = "Female",
                Duty = "Leader"
            };
            staff2 = new Staff()
            {
                Name = "Cyber1",
                Age = 27,
                Sex = "Female",
                Duty = "Normal"
            };
            staff.StaffList.Add(staff2);
            staff2 = new Staff()
            {
                Name = "Cyber2",
                Age = 28,
                Sex = "Female",
                Duty = "Normal"
            };
            staff.StaffList.Add(staff2);
            StaffList.Add(staff);
        }
    }

    public partial class Staff : ObservableObject
    {
        [ObservableProperty]
        private string? name = null;

        [ObservableProperty]
        private int age;

        [ObservableProperty]
        private string? sex = null;

        [ObservableProperty]
        private string? duty = null;

        [ObservableProperty]
        private bool isChecked = true;

        [ObservableProperty]
        private bool isSelected = false;

        [ObservableProperty]
        private bool isExpanded = false;

        [ObservableProperty]
        private ObservableCollection<Staff> staffList = [];
    }
}