XmlHelper

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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Xml;   namespace ZB.QueueSystem.Common {     /// <summary>     /// 用于XML操作     /// </summary>     public class XmlHelper     {         private static XmlHelper instance;         public static XmlHelper Instance         {             get             {                 if (instance == null) instance = new XmlHelper();                 return XmlHelper.instance;             }         }           /// <summary>         /// 根据路径、节点、属性获取属性对应的值         /// </summary>         /// <param name="path">文件路径</param>         /// <param name="nodeName">节点路径，eg:root//am</param>         /// <param name="attributeName">属性名称</param>         /// <returns>属性值</returns>         public string GetAttributeValueByXmlNode(string path, string nodeName, string attributeName)         {             XmlDocument doc = new XmlDocument();             doc.Load(path);               XmlNode node = doc.SelectSingleNode(nodeName);             return node.Attributes[attributeName].Value;         }           /// <summary>         /// 根据路径、节点、属性设置属性对应的值         /// </summary>         /// <param name="path">文件路径</param>         /// <param name="nodeName">节点路径，eg:root//am</param>         /// <param name="attributeName">属性名称</param>         /// <param name="attValue">属性值</param>         public void SetAttributeValueByXmlNode(string path, string nodeName,             string attributeName, string attValue)         {             XmlDocument doc = new XmlDocument();             doc.Load(path);               XmlNode node = doc.SelectSingleNode(nodeName);             node.Attributes[attributeName].Value = attValue;             doc.Save(path);         }           /// <summary>         /// 获取指定节点子节点指定属性的值         /// </summary>         /// <param name="filePath">文件路径</param>         /// <param name="nodePath">节点</param>         /// <param name="attribute">属性名称</param>         /// <returns>List<string>value属性的值</returns>         public List<string> GetNodeItemAttValue(string path, string nodePath, string attribute)         {             XmlDocument doc = new XmlDocument();             doc.Load(path);             XmlNode node = doc.SelectSingleNode(nodePath);             string value = string.Empty;             List<string> list = new List<string>();             foreach (XmlNode item in node)             {                 value = item.Attributes[attribute].Value;                 // if (string.IsNullOrEmpty(value)) continue;                   list.Add(value);             }               return list;         }           /// <summary>         /// 获取config.xml文件root/am或者root/pm节点下item节点对应属性集合         /// </summary>         /// <param name="path">文件路径</param>         /// <param name="nodePath">节点路径</param>         /// <returns>List<ConfigItem></returns>         public List<ConfigItem> GetNodeItemList(string path, string nodePath)         {             XmlDocument doc = new XmlDocument();             doc.Load(path);             XmlNode node = doc.SelectSingleNode(nodePath);             string value = string.Empty;             List<ConfigItem> list = new List<ConfigItem>();             foreach (XmlNode item in node)             {                 ConfigItem config = new ConfigItem();                 config.Content = item.Attributes["content"].Value;                 config.BeginCode = item.Attributes["begincode"].Value;                 config.EndCode = item.Attributes["endcode"].Value;                   list.Add(config);             }               return list;         }           /// <summary>         /// 删除指定节点的子节点         /// </summary>         /// <param name="path">文件路径</param>         /// <param name="nodePath">节点路径</param>         /// <returns></returns>         public bool RemoveNodeByNode(string path, string nodePath)         {             XmlDocument doc = new XmlDocument();             doc.Load(path);               XmlNode node = doc.SelectSingleNode(nodePath);             node.InnerText = string.Empty;             doc.Save(path);               return true;         }           /// <summary>         /// 添加节点         /// </summary>         /// <param name="path">文件路径</param>         /// <param name="nodePath">节点路径</param>         /// <param name="items">List<ConfigItem> items</param>         /// <returns></returns>         public bool AddNodeByNode(string path, string nodePath, List<ConfigItem> items)         {             XmlDocument doc = new XmlDocument();             doc.Load(path);               XmlNode node = doc.SelectSingleNode(nodePath);             foreach (ConfigItem item in items)             {                 XmlElement element = doc.CreateElement("item");                 element.SetAttribute("content",item.Content);                 element.SetAttribute("begincode", item.BeginCode);                 element.SetAttribute("endcode", item.EndCode);                   node.AppendChild(element);             }               doc.Save(path);               return true;         }           /// <summary>         /// 对指定节点内容进行替换         /// </summary>         /// <param name="path">文件路径</param>         /// <param name="nodePath">节点路径</param>         /// <param name="items">List<ConfigItem> items</param>         /// <returns></returns>         public bool ResetNodeByNode(string path, string nodePath, List<ConfigItem> items)         {             XmlDocument doc = new XmlDocument();             doc.Load(path);               XmlNode node = doc.SelectSingleNode(nodePath);             node.InnerText = string.Empty;               foreach (ConfigItem item in items)             {                 XmlElement element = doc.CreateElement("item");                 element.SetAttribute("content", item.Content);                 element.SetAttribute("begincode", item.BeginCode);                 element.SetAttribute("endcode", item.EndCode);                   node.AppendChild(element);             }               doc.Save(path);               return true;         }     }       /// <summary>     /// config.xml item节点属性描述     /// </summary>     public class ConfigItem     {         public string Content { get; set; }         public string BeginCode { get; set; }         public string EndCode { get; set; }     } }

　　

<?xml version="1.0" encoding="utf-8"?>
<root>
<test begintime="8" endtime="12" colcount="15" codecount="100">
    <item content=" 08:00-09:00" begincode="1" endcode="25"/>
    <item content=" 09:00-10:00" begincode="25" endcode="50"/>
    <item content=" 10:00-11:00" begincode="50" endcode="75"/>
    <item content=" 11:00-12:00" begincode="75" endcode="100"/>
  </test>
</root>