代码修改后的版本，全部提交

Mtxfw.Utility/XmlClass.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Xml;
+using System.Data;
+
+namespace Mtxfw.Utility
+{
+    public class XmlClass
+    {
+        //构造函数
+        public XmlClass()
+        {
+
+        }
+
+        public XmlDataDocument Create_doc(string xml_path)
+        {
+            //实例化XML操作类
+            XmlDataDocument doc = new XmlDataDocument();
+            try
+            {
+                //加载XML 文件
+                doc.Load(xml_path);
+            }
+            catch (Exception)
+            {
+                
+                throw;
+            }
+
+            return doc;
+        }
+        /// <summary>
+        /// 根据XML文件创建DataTable列的方法
+        /// </summary>
+        /// <param name="xml_path"></param>
+        /// <param name="rootNode"></param>
+        /// <returns></returns>
+        public DataTable Table_Create(string xml_path, string rootNode)
+        {
+
+            //实例化XML操作对象类
+            XmlDataDocument doc = Create_doc(xml_path);
+            //创建DataTable 类型的变量DT 用来存储读取的XML数据
+            DataTable dt = new DataTable();
+            //获取根节点
+            XmlNode root = doc.SelectSingleNode(rootNode);
+            //循环创建DT列
+            foreach (XmlNode node in root.ChildNodes)
+            {
+                if (node.Name != "#comment")
+                {
+                    dt.Columns.Add(node.Attributes["name"].Value, typeof(string));
+                }
+            }
+            return dt;
+        }
+        /// <summary>
+        /// XML读取类
+        /// </summary>
+        /// <param name="xml_path">XML文件地址</param>
+        /// <param name="rootNode">根节点名称</param>
+        /// <returns></returns>
+        public DataTable Xml_Reader(string xml_path, string rootNode)
+        {
+            //实例化XML操作对象类
+            XmlDataDocument doc = Create_doc(xml_path);
+            //创建DataTable 类型的变量DT 用来存储读取的XML数据
+            DataTable dt = new DataTable();
+            //获取根节点
+            XmlNode root = doc.SelectSingleNode(rootNode);
+            //创建行
+            DataRow row = dt.NewRow();
+            //循环添加DT列
+            foreach (XmlNode node in root.ChildNodes)
+            {
+                if (node.Name != "#comment")
+                {
+                    dt.Columns.Add(node.Attributes["name"].Value, typeof(string));
+                    row[node.Attributes["name"].Value] = node.Attributes["value"].Value;
+                }
+            }
+            dt.Rows.Add(row);
+            return dt;
+        }
+        /// <summary>
+        /// XML数据更新操作
+        /// </summary>
+        /// <param name="xml_path">XML路径</param>
+        /// <param name="rootNode">XML根节点</param>
+        /// <param name="dt">数据更新Table</param>
+        public void Xml_Update(string xml_path, string rootNode, DataTable dt)
+        {
+            //实例化XML操作对象类
+            XmlDataDocument doc = Create_doc(xml_path);
+            //获取根节点
+            XmlNode root = doc.SelectSingleNode(rootNode);
+            //循环更新数据
+            foreach (XmlNode node in root.ChildNodes)
+            {
+                if (node.Name != "#comment")
+                {
+                    node.Attributes["value"].Value = dt.Rows[0][node.Attributes["name"].Value].ToString();
+                }
+            }
+            //保存更讯
+            doc.Save(xml_path);
+        }
+    }
+}