Catchapp/Captchapp/ViewModels/MainWindowViewModel.cs

using Avalonia.Controls;
using ReactiveUI;
using System.Threading;

namespace Captchapp.ViewModels
{
    public class MainWindowViewModel : ViewModelBase
    {
        UserControl control = new Page1();

        public UserControl Control {
            get => control;
            set => this.RaiseAndSetIfChanged(ref control, value);
        } 

        Page1ViewModel page1VM = new Page1ViewModel();
        Page2ViewModel page2VM = new Page2ViewModel();

        public Page1ViewModel Page1VM { 
            get => page1VM;
            set => page1VM = value;
        }

        public Page2ViewModel Page2VM
        {
            get => page2VM;
            set => page2VM = value;
        }

        public void toPage1()
        {
            Control = new Page1();
        }

        public void toPage2()
        {
            if (Page1VM.Authorize())
            {
                Control = new Page2();
                Page1VM.ErrorMessage = "";
                Page1VM.ErrorVisibility = false;
            }
            else 
            {
                Page1VM.ErrorMessage = "Логин или пароль неправильные. Повторите попытку";
                Page1VM.ErrorVisibility = true;
                Page1VM.makeCaptcha();
                Page1VM.LoginVisibility = false;
            }
            
        }

        private Timer timer;
        private int count = 0;


        public void toPage2Captcha()
        {
            if (Page1VM.checkCaptcha())
            {
                Page1VM.ErrorVisibility = false;
                Page1VM.LoginVisibility = true;
                Page1VM.CaptchaVisibility = false;
                Control = new Page2();
                Page1VM.ErrorMessage = "";
            }
            else
            {
                Page1VM.ErrorMessage = "Логин или пароль неправильные. Повторите попытку";
                Page1VM.ErrorVisibility = true;
                Page1VM.makeCaptcha();
                Page1VM.CaptchaVisibility = false;
                Page1VM.LoginVisibility = false;
                // Здесь вызывается таймер
                Page1VM.TimerVisibility = true;
                Page1VM.TextBoxEnable = false;
                Page1VM.Password = "";
                Page1VM.Email = "";
                timer = new Timer(timerText, null, 0,1000);
            }

        }



        public void timerText(object? obj)
        {
            count++;
            Page1VM.TimerMessage = $"Попробуйте снова через {10-count} секунд";
            if (count >= 10) {
                Page1VM.TimerVisibility = false;
                Page1VM.TextBoxEnable = true;
                Page1VM.CaptchaVisibility = true;
                count = 0;
                timer.Dispose();
            }
        }


    }

    

}