.net 操作xml --移除注释节点

/// <summary>
        /// xml字符串转xml文档  忽略注释信息
        /// </summary>
        /// <param name="sXml">xml字符串</param>
        /// <returns></returns>
        public  XmlDocument XmlFromStrIgnoreComment(string sXml)
        {
            try
            {
                XmlDocument _XmlDocument = new XmlDocument();
                _XmlDocument.LoadXml(sXml);
                return this.XmlRemoveComment(_XmlDocument);
            }
            catch (Exception)
            {
                return null;
            }

        }
        /// <summary>
        /// xml文档移除 注释节点
        /// </summary>
        /// <param name="sXml">xml文档</param>
        /// <returns></returns>
        public  XmlDocument XmlRemoveComment(XmlDocument sXml)
        {
            List<XmlNode> dXmlNodeList = new List<XmlNode>();
            this.GetXmlRemoveComment(sXml.ChildNodes, dXmlNodeList);
            foreach (XmlNode vXmlNode in dXmlNodeList)
            {
                vXmlNode.ParentNode.RemoveChild(vXmlNode);
            }
            return sXml;
        }

        /// <summary>
        /// 获取xml中的 注释节点
        /// </summary>
        /// <param name="xmlNodeList">待查找结点</param>
        /// <param name="dXmlNodeList">注释节点</param>
        public void GetXmlRemoveComment(XmlNodeList xmlNodeList, List<XmlNode> dXmlNodeList)
        {
            foreach (XmlNode xmlNode in xmlNodeList)
            {
                if (xmlNode.NodeType == XmlNodeType.Comment)
                {
                    dXmlNodeList.Add(xmlNode);
                }
                else
                {
                    if (xmlNode.HasChildNodes)
                    {
                        GetXmlRemoveComment(xmlNode.ChildNodes, dXmlNodeList);
                    }
                }
            }
        }