XML增加、删除、修改、查询 节点帮助类
XML帮助类 （增加、删除、修改、查询 ）using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using System.Collections;
namespace CommandXML
{
public class cmdXML
{
/// <summary>
/// 创建XML文件
/// </summary>
/// <param name="xmlFilePath">存放目录</param>
/// <param name="rootNodename">根节点名字</param>
public void CreateXMLDoc(string xmlFilePath, string rootNodename)
{
//初始化一个xml实例
XmlDocument myXmlDoc = new XmlDocument();
//<?xml version="1.0" encoding="UTF-8"?>
myXmlDoc.AppendChild(myXmlDoc.CreateXmlDeclaration("1.0", "UTF-8", null));
//创建xml的根节点
XmlElement rootElement = myXmlDoc.CreateElement(rootNodename);
//将根节点加入到xml文件中（AppendChild）
myXmlDoc.AppendChild(rootElement);
myXmlDoc.Save(xmlFilePath);
}
/// <summary>
/// 增加第一层的节点
/// </summary>
/// <param name="xmlFilePath">文件路径</param>
/// <param name="RootPath">根节点名字</param>
/// <param name="Name">所要添加第一层节点的节点名</param>
/// <param name="attribute"></param>
public void AddXmlFirstNode(string xmlFilePath, string RootPath, string Name, string[,] attribute)
{
try
{
XmlDocument myXmlDoc = new XmlDocument();
myXmlDoc.Load(xmlFilePath);
XmlNode memberlist = myXmlDoc.SelectSingleNode(RootPath);
//XmlNodeList nodelist = memberlist.ChildNodes;
XmlElement firstLevelElement1 = myXmlDoc.CreateElement(Name);
//填充第一层的第一个子节点的属性值（SetAttribute）
for (int i = 0; i < attribute.GetLength(0); i++)
{
firstLevelElement1.SetAttribute(attribute, attribute);
}
//将第一层的第一个子节点加入到根节点下
memberlist.AppendChild(firstLevelElement1);
//保存更改
myXmlDoc.Save(xmlFilePath);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
/// <summary>
/// 增加第二层节点
/// </summary>
/// <param name="xmlFilePath">路径</param>
/// <param name="RootPath">根节点名</param>
/// <param name="FirstElementattributesName">第一层节点属性名</param>
/// <param name="Firstattributes">第一层节点属性名对应的值</param>
/// <param name="SecondElement">所要增加的第二层节点名</param>
/// <param name="SecondinnerText">第二层节点对应的存储内容</param>
public void AddXmlSecondNod(string xmlFilePath, string RootPath, string FirstElementattributesName, string Firstattributes, string[] SecondElement, string[] SecondinnerText)
{
try
{
XmlDocument myXmlDoc = new XmlDocument();
myXmlDoc.Load(xmlFilePath);
XmlNode memberlist = myXmlDoc.SelectSingleNode(RootPath);
XmlNodeList nodelist = memberlist.ChildNodes;
//添加一个带有属性的节点信息
foreach (XmlNode node in nodelist)
{
if (node.Attributes.Value.Equals(Firstattributes))
{
for (int i = 0; i < SecondElement.Length; i++)
{
XmlElement newElement = myXmlDoc.CreateElement(SecondElement);
newElement.InnerText = SecondinnerText;
node.AppendChild(newElement);
}
}
}
//保存更改
myXmlDoc.Save(xmlFilePath);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
/// <summary>
/// 获取第一层节点的属性值，返回所有的属性名和对应的值
/// </summary>
/// <param name="xmlFilePath">文件路径</param>
/// <param name="RootPath">根节点名</param>
/// <param name="firstNodeName">第一层节点名</param>
/// <returns></returns>
public ArrayList GetXMLFirstNodeAttributes(string xmlFilePath, string RootPath, string firstNodeName)
{
ArrayList list = new ArrayList();
try
{
//初始化一个xml实例
XmlDocument myXmlDoc = new XmlDocument();
//加载xml文件（参数为xml文件的路径）
myXmlDoc.Load(xmlFilePath);
//获得第一个姓名匹配的节点（SelectSingleNode）：此xml文件的根节点
XmlNode rootNode = myXmlDoc.SelectSingleNode(RootPath);
//分别获得该节点的InnerXml和OuterXml信息
string innerXmlInfo = rootNode.InnerXml.ToString();
string outerXmlInfo = rootNode.OuterXml.ToString();
//获得该节点的子节点（即：该节点的第一层子节点）
XmlNodeList firstLevelNodeList = rootNode.ChildNodes;
foreach (XmlNode node in firstLevelNodeList)
{
//获得该节点的属性集合
if (node.Name == firstNodeName)
{
XmlAttributeCollection attributeCol = node.Attributes;
foreach (XmlAttribute attri in attributeCol)
{
//获取属性名称与属性值
string name = attri.Name;
string value = attri.Value;
list.Add(name + ":" + value);
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
return list;
}
/// <summary>
/// 获取第二层节点的存储值
/// </summary>
/// <param name="xmlFilePath">文件路径</param>
/// <param name="RootPath">根节点</param>
/// <param name="firstNodeName">第一层节点名</param>
/// <param name="secondNoadeName">第二层节点名</param>
/// <returns></returns>
public ArrayList GetXMLSecondNodeValue(string xmlFilePath, string RootPath, string firstNodeName, string secondNoadeName)
{
ArrayList list = new ArrayList();
try
{
//初始化一个xml实例
XmlDocument myXmlDoc = new XmlDocument();
//加载xml文件（参数为xml文件的路径）
myXmlDoc.Load(xmlFilePath);
//获得第一个姓名匹配的节点（SelectSingleNode）：此xml文件的根节点
XmlNode rootNode = myXmlDoc.SelectSingleNode(RootPath);
//分别获得该节点的InnerXml和OuterXml信息
string innerXmlInfo = rootNode.InnerXml.ToString();
string outerXmlInfo = rootNode.OuterXml.ToString();
//获得该节点的子节点（即：该节点的第一层子节点）
XmlNodeList firstLevelNodeList = rootNode.ChildNodes;
foreach (XmlNode node in firstLevelNodeList)
{
//获得该节点的属性集合
if (node.Name == firstNodeName)
{
foreach (XmlNode _node in node.ChildNodes)
{
if (_node.Name == secondNoadeName)
list.Add(_node.InnerText);
}
}
//判断此节点是否还有子节点
if (node.HasChildNodes)
{
//获取该节点的第一个子节点
XmlNode secondLevelNode1 = node.FirstChild;
//获取该节点的名字
string name = secondLevelNode1.Name;
//获取该节点的值（即：InnerText）
string innerText = secondLevelNode1.InnerText;
Console.WriteLine("{0} = {1}", name, innerText);
//获取该节点的第二个子节点（用数组下标获取）
XmlNode secondLevelNode2 = node.ChildNodes;
name = secondLevelNode2.Name;
innerText = secondLevelNode2.InnerText;
Console.WriteLine("{0} = {1}", name, innerText);
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
return list;
}
/// <summary>
/// 修改第一层节点的属性值
/// </summary>
/// <param name="xmlFilePath">文件路径</param>
/// <param name="RootPath">根节点名</param>
/// <param name="FirstNodeName">第一节点名</param>
/// <param name="FirstNodeAttributes">第一节点属性名</param>
/// <param name="FirstNodeAttributesOldValue">第一节点属性值</param>
/// <param name="newValue"></param>
public void ModifyXmlFirstattribute(string xmlFilePath, string RootPath, string FirstNodeName, string FirstNodeAttributes, string FirstNodeAttributesOldValue, string newValue)
{
try
{
XmlDocument myXmlDoc = new XmlDocument();
myXmlDoc.Load(xmlFilePath);
//XmlNode rootNode = myXmlDoc.FirstChild;
//XmlNodeList firstLevelNodeList = rootNode.ChildNodes;
XmlNode rootNode = myXmlDoc.SelectSingleNode(RootPath);
foreach (XmlNode node in rootNode.ChildNodes)
{
if (node.Name.Equals(FirstNodeName))
{
//修改此节点的属性值
if (node.Attributes.Value.Equals(FirstNodeAttributesOldValue))
{
node.Attributes.Value = newValue;
}
}
}
//要想使对xml文件所做的修改生效，必须执行以下Save方法
myXmlDoc.Save(xmlFilePath);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
/// <summary>
/// 修改第二节点的存储值
/// </summary>
/// <param name="xmlFilePath">文件路径</param>
/// <param name="RootPath">根节点名字</param>
/// <param name="FirstNodeName">第一节点名字</param>
/// <param name="FirstNodeAttributes">第一节点属性名</param>
/// <param name="FirstNodeAttributesValue">第一节点属性值</param>
/// <param name="SecondNodeName">第二节点名字</param>
/// <param name="value">第二节点存储值</param>
public void ModifyXmlElementValue(string xmlFilePath, string RootPath, string FirstNodeName,string FirstNodeAttributes, string FirstNodeAttributesValue, string SecondNodeName, string value)
{
try
{
XmlDocument myXmlDoc = new XmlDocument();
myXmlDoc.Load(xmlFilePath);
XmlNode rootNode = myXmlDoc.SelectSingleNode(RootPath);
foreach (XmlNode node in rootNode.ChildNodes)
{
if (node.Name.Equals(FirstNodeName))
{
//修改此节点的属性值
if (node.Attributes.Value.Equals(FirstNodeAttributesValue))
{
foreach (XmlNode _node in node.ChildNodes)
{
if (_node.Name == SecondNodeName)
{
_node.InnerText = value;
}
}
}
}
}
//要想使对xml文件所做的修改生效，必须执行以下Save方法
myXmlDoc.Save(xmlFilePath);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
/// <summary>
/// 删除第一节点
/// </summary>
/// <param name="xmlFilePath">路径</param>
/// <param name="RootPath">根节点</param>
/// <param name="FirstNodeName">第一节点名</param>
/// <param name="FirstNodeAttributes">第一节点属性名</param>
/// <param name="FirstNodeAttributesValue">第一节点属性值</param>
public void DeleteXmlFirstnode(string xmlFilePath, string RootPath, string FirstNodeName, string FirstNodeAttributes, string FirstNodeAttributesValue)
{
try
{
XmlDocument myXmlDoc = new XmlDocument();
myXmlDoc.Load(xmlFilePath);
XmlNode rootNode = myXmlDoc.SelectSingleNode(RootPath);
foreach (XmlNode node in rootNode.ChildNodes)
{
if (node.Name.Equals(FirstNodeName))
{
if (node.Attributes.Value.Equals(FirstNodeAttributesValue))
{
//node.RemoveAll();
rootNode.RemoveChild(node);
}
}
}
//保存对xml文件所做的修改
myXmlDoc.Save(xmlFilePath);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
/// <summary>
/// 删除子节点
/// </summary>
/// <param name="xmlFilePath">路径</param>
/// <param name="FirstElementattributesName">第一节点属性名</param>
/// <param name="Firstattributes">第一节点属性值</param>
/// <param name="secondnodeName">子节点名称</param>
public void DeleteXmlsecondNode(string xmlFilePath, string RootPath, string FirstNodeName, string FirstNodeAttributes, string FirstNodeAttributesValue, string secondnodeName)
{
try
{
XmlDocument myXmlDoc = new XmlDocument();
myXmlDoc.Load(xmlFilePath);
XmlNode rootNode = myXmlDoc.SelectSingleNode(RootPath);
foreach (XmlNode node in rootNode.ChildNodes)
{
if (node.Name.Equals(FirstNodeName))
{
if (node.Attributes.Value.Equals(FirstNodeAttributesValue))
{
foreach (XmlNode _node in node.ChildNodes)
{
if (_node.Name == secondnodeName)
//_node.RemoveAll();
node.RemoveChild(_node);
}
}
}
}
//保存对xml文件所做的修改
myXmlDoc.Save(xmlFilePath);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
}
}
嗯，真好！感觉好详细。
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