AJH.CMS.Core.Data.RoleDataMapper.GetRoles C# (CSharp) Method

        internal static List<Role> GetRoles()
        {
            List<Role> colRoles = null;
            Role role = null;

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

                sqlCommand.Connection.Open();
                using (SqlDataReader sqlDataReader = sqlCommand.ExecuteReader(System.Data.CommandBehavior.CloseConnection))
                {
                    colRoles = new List<Role>();
                    while (sqlDataReader.Read())
                    {
                        role = GetRole(colRoles, sqlDataReader);
                        FillFromReader(role, sqlDataReader);
                    }

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