How to share instance of an object in base class to its inherited classes?

class Window
{
    protected WindowManager windowManager;

    public Window()
    {
      windowManager = new WindowManager();
    }
    
    public virtual void DrawWindow()
    {
    }
}

using System;

class LockscreenWindow : Window
{
    private PasswordManager passwordManager;
    
    
    public override void DrawWindow()
    {
        passwordManager = new();
        
        Console.Write("Enter Password: ");
        string password = Console.ReadLine();

        if(password == passwordManager.GetPassword())
        {
            
            Console.WriteLine("Password correct");
            windowManager.SwitchWindow(WindowManager.WindowName.Homescreen);
        }else
        {
            Console.WriteLine("Password Incorrect");
        }
    }

}