AJH.CMS.Core.Data.GroupDataMapper.GetGroups C# (CSharp) Method

        internal static List<Group> GetGroups(int portalID, int languageID)
        {
            List<Group> colGroups = null;
            Group Group = null;

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

                SqlParameter sqlParameter = null;
                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.Group;
                sqlCommand.Parameters.Add(sqlParameter);

                sqlParameter = new SqlParameter(PN_GROUP_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))
                {
                    colGroups = new List<Group>();
                    while (sqlDataReader.Read())
                    {
                        Group = GetGroup(colGroups, sqlDataReader);
                        FillFromReader(Group, sqlDataReader);
                    }

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