public IActionResult DeleteAll()
        {
            _checkDataBase();
            var data = _dbProvider.ContextAction(connection =>
            {
                connection.OpenIfClosed();
                try
                {
                    _mainInitializer.DeleteAll(connection);
                    _startOrStop(connection, false);
                    return(_createAppvarsReader(connection));
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);
                    throw;
                }

                finally
                {
                    connection.CloseIfOpened();
                }
            });

            return(Json(data));
        }