解析XML文件

        private XmlDocument GetDoc(string strpath)
        {
            if (System.IO.File.Exists(strpath) == true)
            {
                XmlDocument document = new XmlDocument();
                document.Load(strpath);//加载xml文档
                return document;
            }
            else
            {
                return null;
            }

        }

XmlNode newNode = document.DocumentElement.SelectSingleNode("//layer[@name=‘" + 名称+ "‘]");
if (newNode != null)
{
　　string aliasName = newNode.Attributes["别名"].Value.ToString();
　　string strDes = newNode.Attributes["描述"].Value.ToString();
}

XmlNode SymbologyNode = NameNode.SelectSingleNode("//Symbology[@FieldValue=‘" + strieldValue + "‘]");