public static void ConfigureConnectionProvider(this IServiceCollection services, IConfiguration configuration)
        {
            var config = new CartDbConfig
            {
                ConnectionString = configuration.GetConnectionString("Cart")
            };

            services.AddSingleton(config);

            services.AddScoped <IConnectionProvider, ConnectionProvider>();
        }
 public ConnectionProvider(CartDbConfig dbConfig)
 {
     _dbConfig = dbConfig;
 }