AJH.CMS.Core.Data.ProductDataMapper.SearchProducts C# (CSharp) Method

        internal static List<Product> SearchProducts(int catalogId, string productName, int portalID, int languageID)
        {
            List<Product> colProducts = null;
            Product Product = null;

            using (SqlConnection sqlConnection = new SqlConnection(CMSCoreBase.CMSCoreConnectionString))
            {
                SqlCommand sqlCommand = new SqlCommand(SN_PRODUCT_SEARCH, sqlConnection);
                sqlCommand.CommandType = System.Data.CommandType.StoredProcedure;

                SqlParameter sqlParameter = null;
                sqlParameter = new SqlParameter(CatalogDataMapper.PN_CATALOG_ID, System.Data.SqlDbType.Int);
                sqlParameter.Direction = System.Data.ParameterDirection.Input;
                sqlParameter.Value = catalogId;
                sqlCommand.Parameters.Add(sqlParameter);

                sqlParameter = new SqlParameter(PN_PRODUCT_NAME, SqlDbType.NVarChar);
                sqlParameter.Direction = System.Data.ParameterDirection.Input;
                sqlParameter.Value = productName;
                sqlCommand.Parameters.Add(sqlParameter);

                sqlParameter = new SqlParameter(ECommerceDataMapperBase.PN_ECO_LAN_LAN_ID, System.Data.SqlDbType.Int);
                sqlParameter.Direction = System.Data.ParameterDirection.Input;
                sqlParameter.Value = languageID;
                sqlCommand.Parameters.Add(sqlParameter);

                sqlParameter = new SqlParameter(ECommerceDataMapperBase.PN_MODULE_ID, System.Data.SqlDbType.Int);
                sqlParameter.Direction = System.Data.ParameterDirection.Input;
                sqlParameter.Value = (int)CMSEnums.ECommerceModule.Product;
                sqlCommand.Parameters.Add(sqlParameter);

                sqlParameter = new SqlParameter(PN_PRODUCT_PORTAL_ID, System.Data.SqlDbType.Int);
                sqlParameter.Direction = System.Data.ParameterDirection.Input;
                sqlParameter.Value = portalID;
                sqlCommand.Parameters.Add(sqlParameter);

                sqlCommand.Connection.Open();
                using (SqlDataReader sqlDataReader = sqlCommand.ExecuteReader(System.Data.CommandBehavior.CloseConnection))
                {
                    colProducts = new List<Product>();
                    while (sqlDataReader.Read())
                    {
                        Product = GetProduct(colProducts, sqlDataReader);
                        FillFromReader(Product, sqlDataReader);
                    }

                    sqlDataReader.Close();
                    sqlCommand.Connection.Close();
                }
            }
            return colProducts;
        }