Process multiline message

 /// <summary>
        /// Process multiline message
        /// </summary>
        /// <param name="heading"></param>
        /// <param name="messages"></param>
        /// <returns></returns>
        public static string ProcessMessageList(string heading, List<string> messages)
        {
            StringBuilder messageText;
            messageText = new StringBuilder();
            messageText.Append(heading);
            messageText.Append(messages.Count > 0 ? ERPUtilityResources.MsgStart : string.Empty);
            foreach (string message in messages)
            {
                messageText.Append(string.Format(ERPUtilityResources.MsgFormat, message));
            }
            messageText.Append(messages.Count > 0 ? ERPUtilityResources.MsgEnd : string.Empty);
            return messageText.ToString();
        }