Avalonia/AvaloniaApplication3/ViewModels/PersonalAccountViewModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using Avalonia.Controls;
using AvaloniaApplication3.Models;
using Microsoft.EntityFrameworkCore;
using ReactiveUI;

namespace AvaloniaApplication3.ViewModels
{
	public class PersonalAccountViewModel : ViewModelBase
	{
        User? currentUser;
        UsersLogin? user;
        TestDataBaseCheskinaContext db = new TestDataBaseCheskinaContext();

        public PersonalAccountViewModel(User? currentUser)
        {
            this.currentUser = currentUser;
            GetData();
        }

        private void GetData()
        {
            user = db.UsersLogins.Include(u => u.IdUserNavigation).FirstOrDefault(x => x.IdUser == currentUser.IdUser);
            Name = user.IdUserNavigation.Name;
            Surname = user.IdUserNavigation.Surname;
            Patronumic = user.IdUserNavigation.Patronymic;
            Login = user.Login;
            Password = user.Password;
        }

        private string? name;
        private string? surname;
        private string? patronumic;
        private string? login;
        private string? password;
        private string? newPassword;
        private string? newPasswordAgain;
        private string message = "";
        private bool isChangedPass = false;

        public void SaveChanges()
        {
            
            if (Name != null && Name !="" && Surname != null && Surname != "" && Patronumic != null && Patronumic != "" && Login != null && Login != "")
            {
                user.IdUserNavigation.Name = Name;
                user.IdUserNavigation.Surname = Surname;
                user.IdUserNavigation.Patronymic = Patronumic;
                user.Login = Login;
                if (IsChangedPass)
                {
                    if (NewPassword != NewPasswordAgain) Message = "Ïàðîëè íå ñîâïàäàþò";
                    else if (NewPassword != null && NewPassword != "" && NewPasswordAgain != null && NewPasswordAgain != "") Password = NewPasswordAgain;
                    else Message = "Çàïîëíåíû íå âñå äàííûå";
                }
                user.Password = Password;
                db.SaveChanges();
            }
            else Message = "Çàïîëíåíû íå âñå äàííûå";
        }

        public User? CurrentUser { get => currentUser; set => currentUser = value; }
        public string? Name { get => name; set => name = value; }
        public string? Surname { get => surname; set => surname = value; }
        public string? Patronumic { get => patronumic; set => patronumic = value; }
        public string? Login { get => login; set => login = value; }
        public string? Password { get => password; set => password = value; }
        public string? NewPassword { get => newPassword; set => newPassword = value; }
        public string? NewPasswordAgain { get => newPasswordAgain; set => newPasswordAgain = value; }
        public string Message { get => message; set => this.RaiseAndSetIfChanged(ref message, value); }
        public bool IsChangedPass { get => isChangedPass; set => this.RaiseAndSetIfChanged(ref isChangedPass, value); }
    }
}