KuzinRkisPattern/RKISPATTERN/ViewModels/ListUsersViewModel.cs

using RKISPATTERN.Command;
using RKISPATTERN.Helpers;
using RKISPATTERN.View;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;

namespace RKISPATTERN.ViewModels
{
    class UserInfo
    {
        public int ID { get; set; }
        public string FirstName { get; set; }
        public string MiddleName { get; set; }
        public string LastName { get; set; }
        public string Login { get; set; }
        public string Phone { get; set; }
        public UserInfo(int iD, string firstName, string middleName, string lastName, string login, string phone)
        {
            ID = iD;
            FirstName = firstName;
            MiddleName = middleName;
            LastName = lastName;
            Login = login;
            Phone = phone;
        }

    }
    
    class ListUsersViewModel : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler? PropertyChanged;
        public void OnPropertyChanged([CallerMemberName] string prop = "")
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(prop));
        }
        private RelayCommand backToMenu;
        public RelayCommand BackToMenu
        {
            get
            {
                return backToMenu ??
                (backToMenu = new RelayCommand(obj =>
                {
                    MainMenu mainMenu = new MainMenu();
                    mainMenu.Show();
                    Helper.CloseWindow<ListUsers>();
                }));
            }
        }
        private ObservableCollection<UserInfo> _users;
        public ObservableCollection<UserInfo> Users
        {
            get => _users;
            set
            {
                _users = value;
                OnPropertyChanged();
            }
        }
        public ListUsersViewModel()
        {
            using (DBContext dbContext = new DBContext())
            {
                List<UserInfo> userInfos = new List<UserInfo>();
                foreach (var el in dbContext.User)
                {
                    userInfos.Add(new UserInfo(el.Id, el.FirstName, el.MiddleName, el.LastName,el.Login, el.Phone));
                }
                _users = new ObservableCollection<UserInfo>(userInfos);
            }
        }

    }
}