PIbd-23_Leonteva_V._A._LawFirm/LawFirm/LawFirmListImplement/DataListSingleton.cs

using LawFirmListImplement.Models;

namespace LawFirmListImplement
{
    public class DataListSingleton
    {
        private static DataListSingleton? _instance;
        public List<Blank> Blanks { get; set; }
        public List<Order> Orders { get; set; }
        public List<Document> Documents { get; set; }
		public List<Client> Clients { get; set; }
		private DataListSingleton()
        {
            Blanks = new List<Blank>();
            Orders = new List<Order>();
            Documents = new List<Document>();
			Clients = new List<Client>();
		}
        public static DataListSingleton GetInstance()
        {
            if (_instance == null)
            {
                _instance = new DataListSingleton();
            }
            return _instance;
        }
    }
}