C# 创建及操作XML文件

XmlDocument doc = new XmlDocument();
XmlDeclaration dec = doc.CreateXmlDeclaration("1.0", "GB2312", null);
doc.AppendChild(dec);
//创建一个根节点（一级）
XmlElement root = doc.CreateElement("First");
doc.AppendChild(root);
//创建节点（二级）
XmlNode node = doc.CreateElement("Seconde");
//创建节点（三级）
XmlElement element1 = doc.CreateElement("Third1");
element1.SetAttribute("Name", "Sam");
element1.SetAttribute("ID", "665");
element1.InnerText = "Sam Comment";
node.AppendChild(element1);
XmlElement element2 = doc.CreateElement("Third2");
element2.SetAttribute("Name", "Round");
element2.SetAttribute("ID", "678");
element2.InnerText = "Round Comment";
node.AppendChild(element2);

root.AppendChild(node);
doc.Save(@"d:\bb.xml");
Console.Write(doc.OuterXml);

写的一个XML操作类，包括读取/插入/修改/删除。

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml;

namespace PuTianCheng
{
/// <summary>
/// XmlHelper 的摘要说明
/// </summary>
public class XmlHelper
{
public XmlHelper()
{
}

/// <summary>
/// 读取数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="attribute">属性名，非空时返回该属性值，否则返回串联值</param>
/// <returns>string</returns>
/**************************************************
* 使用示列:
* XmlHelper.Read(path, "/Node", "")
* XmlHelper.Read(path, "/Node/Element[@Attribute='Name']", "Attribute")
************************************************/
public static string Read(string path, string node, string attribute)
{
string value = "";
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
value = (attribute.Equals("") ? xn.InnerText : xn.Attributes[attribute].Value);
}
catch { }
return value;
}

/// <summary>
/// 插入数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="element">元素名，非空时插入新元素，否则在该元素中插入属性</param>
/// <param name="attribute">属性名，非空时插入该元素属性值，否则插入元素值</param>
/// <param name="value">值</param>
/// <returns></returns>
/**************************************************
* 使用示列:
* XmlHelper.Insert(path, "/Node", "Element", "", "Value")
* XmlHelper.Insert(path, "/Node", "Element", "Attribute", "Value")
* XmlHelper.Insert(path, "/Node", "", "Attribute", "Value")
************************************************/
public static void Insert(string path, string node, string element, string attribute, string value)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
if (element.Equals(""))
{
if (!attribute.Equals(""))
{
XmlElement xe = (XmlElement)xn;
xe.SetAttribute(attribute, value);
}
}
else
{
XmlElement xe = doc.CreateElement(element);
if (attribute.Equals(""))
xe.InnerText = value;
else
xe.SetAttribute(attribute, value);
xn.AppendChild(xe);
}
doc.Save(path);
}
catch { }
}

/// <summary>
/// 修改数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="attribute">属性名，非空时修改该节点属性值，否则修改节点值</param>
/// <param name="value">值</param>
/// <returns></returns>
/**************************************************
* 使用示列:
* XmlHelper.Insert(path, "/Node", "", "Value")
* XmlHelper.Insert(path, "/Node", "Attribute", "Value")
************************************************/
public static void Update(string path, string node, string attribute, string value)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
XmlElement xe = (XmlElement)xn;
if (attribute.Equals(""))
xe.InnerText = value;
else
xe.SetAttribute(attribute, value);
doc.Save(path);
}
catch { }
}

/// <summary>
/// 删除数据
/// </summary>
/// <param name="path">路径</param>
/// <param name="node">节点</param>
/// <param name="attribute">属性名，非空时删除该节点属性值，否则删除节点值</param>
/// <param name="value">值</param>
/// <returns></returns>
/**************************************************
* 使用示列:
* XmlHelper.Delete(path, "/Node", "")
* XmlHelper.Delete(path, "/Node", "Attribute")
************************************************/
public static void Delete(string path, string node, string attribute)
{
try
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode xn = doc.SelectSingleNode(node);
XmlElement xe = (XmlElement)xn;
if (attribute.Equals(""))
xn.ParentNode.RemoveChild(xn);
else
xe.RemoveAttribute(attribute);
doc.Save(path);
}
catch { }
}
}
}

==================================================

XmlFile.xml：
<?xml version="1.0" encoding="utf-8"?>
<Root />

==================================================

使用方法：

string xml = Server.MapPath("XmlFile.xml");
//插入元素
//XmlHelper.Insert(xml, "/Root", "Studio", "", "");
//插入元素/属性
//XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "小路工作室");
//XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "丁香鱼工作室");
//XmlHelper.Insert(xml, "/Root/Studio", "Site", "Name", "谱天城工作室");
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='谱天城工作室']", "Master", "", "红尘静思");
//插入属性
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='小路工作室']", "", "Url", "http://www.wzlu.com/");
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='丁香鱼工作室']", "", "Url", "http://www.luckfish.net/");
//XmlHelper.Insert(xml, "/Root/Studio/Site[@Name='谱天城工作室']", "", "Url", "http://www.putiancheng.com/");
//修改元素值
//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='谱天城工作室']/Master", "", "RedDust");
//修改属性值
//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='谱天城工作室']", "Url", "http://www.putiancheng.net/");
//XmlHelper.Update(xml, "/Root/Studio/Site[@Name='谱天城工作室']", "Name", "PuTianCheng Studio");
//读取元素值
//Response.Write("<div>" + XmlHelper.Read(xml, "/Root/Studio/Site/Master", "") + "</div>");
//读取属性值
//Response.Write("<div>" + XmlHelper.Read(xml, "/Root/Studio/Site", "Url") + "</div>");
//读取特定属性值
//Response.Write("<div>" + XmlHelper.Read(xml, "/Root/Studio/Site[@Name='丁香鱼工作室']", "Url") + "</div>");
//删除属性
//XmlHelper.Delete(xml, "/Root/Studio/Site[@Name='小路工作室']", "Url");
//删除元素
//XmlHelper.Delete(xml, "/Root/Studio", "");

-----分析XML数据-------

<?xml version="1.0" encoding="utf-8" ?>
<FlowER>
<SuccessFlag>True</SuccessFlag>
<ReturnInfo>
<ApproveRow>
<App_Serial>1</App_Serial>
<App_Emp_ID>057274</App_Emp_ID>
<App_Emp_Name>彭媛(YUAN.PENGY)</App_Emp_Name>
<App_YN></App_YN>
<App_Date>2012/06/27 14:55:26</App_Date>
<App_Act_ID>057274</App_Act_ID>
<App_Act_Name>彭媛(YUAN.PENGY) </App_Act_Name>
<App_Remark><![CDATA[]]></App_Remark>
<App_Assigner>SYS.EMP.0</App_Assigner>
<App_Login_Name>YUAN.PENGY</App_Login_Name>
<Form_Approve_ID>ALIFMAP2805633</Form_Approve_ID>
<Form_Kind>SYS.FORM.031</Form_Kind>
<Form_NO>1000024</Form_NO>
<Phase_ID>SYS.FORM.031.APPH.1</Phase_ID>
<App_Type>A</App_Type>
<Assign_Type>N</Assign_Type>
<App_Status>T</App_Status>
<App_Role><![CDATA[财务初审/Finance Initial]]></App_Role>
<Assign_Reason><![CDATA[\r\n转签原因 : 1]]></Assign_Reason>
</ApproveRow>
<ApproveRow>
<App_Serial>1</App_Serial>
<App_Emp_ID>045862</App_Emp_ID>
<App_Emp_Name>张建平(JIANPING.ZHANGJP)</App_Emp_Name>
<App_YN></App_YN>
<App_Date></App_Date>
<App_Act_ID></App_Act_ID>
<App_Act_Name>张建平(JIANPING.ZHANGJP) </App_Act_Name>
<App_Remark><![CDATA[]]></App_Remark>
<App_Assigner>057274</App_Assigner>
<App_Login_Name>JIANPING.ZHANGJP</App_Login_Name>
<Form_Approve_ID>ALIFMAP2805649</Form_Approve_ID>
<Form_Kind>SYS.FORM.031</Form_Kind>
<Form_NO>1000024</Form_NO>
<Phase_ID>SYS.FORM.031.APPH.1</Phase_ID>
<App_Type>A</App_Type>
<Assign_Type>T</Assign_Type>
<App_Status>U</App_Status>
<App_Role><![CDATA[[彭媛(YUAN.PENGY) Transferred]]]></App_Role>
<Assign_Reason><![CDATA[]]></Assign_Reason>
</ApproveRow>
<ApproveRow>
<App_Serial>2</App_Serial>
<App_Emp_ID>013307</App_Emp_ID>
<App_Emp_Name>陈春波(CHUNBO.CHENCB)</App_Emp_Name>
<App_YN></App_YN>
<App_Date></App_Date>
<App_Act_ID></App_Act_ID>
<App_Act_Name>陈春波(CHUNBO.CHENCB) </App_Act_Name>
<App_Remark><![CDATA[]]></App_Remark>
<App_Assigner>SYS.EMP.0</App_Assigner>
<App_Login_Name>CHUNBO.CHENCB</App_Login_Name>
<Form_Approve_ID>ALIFMAP2805636</Form_Approve_ID>
<Form_Kind>SYS.FORM.031</Form_Kind>
<Form_NO>1000024</Form_NO>
<Phase_ID>SYS.FORM.031.APPH.3</Phase_ID>
<App_Type>A</App_Type>
<Assign_Type>N</Assign_Type>
<App_Status>W</App_Status>
<App_Role><![CDATA[实际需求方上级主管/Actual Requester Manager]]></App_Role>
<Assign_Reason><![CDATA[]]></Assign_Reason>
</ApproveRow>
</ReturnInfo>
</FlowER>

分析XML数据C#代码

方法一

View Code

string approveName = "";
using (XmlReader xmlReader = XmlTextReader.Create(new StringReader(returnXml)))
{

string appEmpName = "";
string appYn = "appYn";
string appDate = "";
while (xmlReader.Read())
{
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.LocalName == "App_Emp_Name")
{
appEmpName = xmlReader.ReadString();
}
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.LocalName == "App_YN")
{
appYn = xmlReader.ReadString();
}
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.LocalName == "App_Date")
{
appDate = xmlReader.ReadString();
}
if (xmlReader.NodeType == XmlNodeType.EndElement && xmlReader.LocalName == "ApproveRow")
{
if (appYn.Length == 0 && appDate.Length == 0)
{
approveName = appEmpName;
break;
}
}
}
}