Database.cs

private readonly static string DBNAME = "Bonarego.db";

        public DataBase()
        {
            
            CreateDataBase();
        }

        public static string documentsFolder()
        {
            string path;
            path = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
            Directory.CreateDirectory(path);
            return path;
        }

        public static void CreateDataBase()
        {
            var conn = new SQLiteConnection(System.IO.Path.Combine(documentsFolder(), DBNAME), false);
            conn.CreateTable<KULLANICI_BILGILERI>();
            conn.CreateTable<Languages>();
            conn.CreateTable<COUNTRY>();
            conn.CreateTable<CITY>();
            conn.CreateTable<MY_TRIP>();
            conn.CreateTable<Fee_Root>();
            conn.CreateTable<Mekanlar_Location>();
            conn.CreateTable<PARENT_CATEGORYS>();
            conn.CreateTable<SALESS>();
            conn.CreateTable<ShowPopup>();
            conn.Close();

            if (File.Exists(System.IO.Path.Combine(documentsFolder(), DBNAME)))
            {
                Log.Debug("warn","File exist!");
            }
            else
            {
                Log.Debug("warn","File not exist!");
            }