读取Xml节点内容
public void readXml()
{
string str = "";
XmlReader re = XmlReader.Create(@"d://s.xml");
while (re.Read())
{
if (re.NodeType == XmlNodeType.Text)
{
str += re.Value+"\r\n";
}
}
console.writeline(str);
}
XmlDocument
下载节点为“title”的内容
public void read()
{
string str="";
XmlDocument doc = new XmlDocument();
doc.Load(@"d://s.xml");
XmlNodeList nod = doc.GetElementsByTagName("title");
foreach (XmlNode no in nod)
{
str += no.OuterXml + "\r\n";
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Xml;
namespace 读取XML
{
/// ＜summary＞
/// Xml文件读取器
/// ＜/summary＞
public class XmlReader : IDisposable
{
private string _xmlPath;
private const string _errMsg = "Error Occurred While Reading ";
private ListBox _listBox;
private XmlTextReader xmlTxtRd;
#region XmlReader 的构造器
public XmlReader()
{
this._xmlPath = string.Empty;
this._listBox = null;
this.xmlTxtRd = null;
}
/// ＜summary＞
/// 构造器
/// ＜/summary＞
/// ＜param name="_xmlPath"＞xml文件绝对路径＜/param＞
/// ＜param name="_listBox"＞列表框用于显示xml＜/param＞
public XmlReader(string _xmlPath, ListBox _listBox)
{
this._xmlPath = _xmlPath;
this._listBox = _listBox;
this.xmlTxtRd = null;
}
#endregion
#region XmlReader 的资源释放方法
/// ＜summary＞
/// 清理该对象所有正在使用的资源
/// ＜/summary＞
public void Dispose()
{
this.Dispose(true);
GC.SuppressFinalize(this);
}
/// ＜summary＞
/// 释放该对象的实例变量
/// ＜/summary＞
/// ＜param name="disposing"＞＜/param＞
protected virtual void Dispose(bool disposing)
{
if (!disposing)
return;
if (this.xmlTxtRd != null)
{
this.xmlTxtRd.Close();
this.xmlTxtRd = null;
}
if (this._xmlPath != null)
{
this._xmlPath = null;
}
}
#endregion
#region XmlReader 的属性
/// ＜summary＞
/// 获取或设置列表框用于显示xml
/// ＜/summary＞
public ListBox listBox
{
get
{
return this._listBox;
}
set
{
this._listBox = value;
}
}
/// ＜summary＞
/// 获取或设置xml文件的绝对路径
/// ＜/summary＞
public string xmlPath
{
get
{
return this._xmlPath;
}
set
{
this._xmlPath = value;
}
}
#endregion
/// ＜summary＞
/// 遍历Xml文件
/// ＜/summary＞
public void EachXml()
{
this._listBox.Items.Clear();
this.xmlTxtRd = new XmlTextReader(this._xmlPath);
try
{
while (xmlTxtRd.Read())
{
this._listBox.Items.Add(this.xmlTxtRd.Value);
}
}
catch (XmlException exp)
{
throw new XmlException(_errMsg + this._xmlPath + exp.ToString());
}
finally
{
if (this.xmlTxtRd != null)
this.xmlTxtRd.Close();
}
}
/// ＜summary＞
/// 读取Xml文件的节点类型
/// ＜/summary＞
public void ReadXmlByNodeType()
{
this._listBox.Items.Clear();
this.xmlTxtRd = new XmlTextReader(this._xmlPath);
try
{
while (xmlTxtRd.Read())
{
this._listBox.Items.Add(this.xmlTxtRd.NodeType.ToString());
}
}
catch (XmlException exp)
{
throw new XmlException(_errMsg + this._xmlPath + exp.ToString());
}
finally
{
if (this.xmlTxtRd != null)
this.xmlTxtRd.Close();
}
}
/// ＜summary＞
/// 根据节点类型过滤Xml文档
/// ＜/summary＞
/// ＜param name="xmlNType"＞XmlNodeType 节点类型的数组＜/param＞
public void FilterByNodeType(XmlNodeType[] xmlNType)
{
this._listBox.Items.Clear();
this.xmlTxtRd = new XmlTextReader(this._xmlPath);
try
{
while (xmlTxtRd.Read())
{
for (int i = 0; i < xmlNType.Length; i++)
{
if (xmlTxtRd.NodeType == xmlNType[i])
{
this._listBox.Items.Add(xmlTxtRd.Name + " is Type " + xmlTxtRd.NodeType.ToString());
}
}
}
}
catch (XmlException exp)
{
throw new XmlException(_errMsg + this.xmlPath + exp.ToString());
}
finally
{
if (this.xmlTxtRd != null)
this.xmlTxtRd.Close();
}
}
/// ＜summary＞
/// 读取Xml文件的所有文本节点值
/// ＜/summary＞
public void ReadXmlTextValue()
{
this._listBox.Items.Clear();
this.xmlTxtRd = new XmlTextReader(this._xmlPath);
try
{
while (xmlTxtRd.Read())
{
if (xmlTxtRd.NodeType == XmlNodeType.Text)
{
this._listBox.Items.Add(xmlTxtRd.Value);
}
}
}
catch (XmlException xmlExp)
{
throw new XmlException(_errMsg + this._xmlPath + xmlExp.ToString());
}
finally
{
if (this.xmlTxtRd != null)
this.xmlTxtRd.Close();
}
}
/// ＜summary＞
/// 读取Xml文件的属性
/// ＜/summary＞
public void ReadXmlAttributes()
{
this._listBox.Items.Clear();
this.xmlTxtRd = new XmlTextReader(this._xmlPath);
try
{
while (xmlTxtRd.Read())
{
if (xmlTxtRd.NodeType == XmlNodeType.Element)
{
if (xmlTxtRd.HasAttributes)
{
this._listBox.Items.Add("The Element " + xmlTxtRd.Name + " has " +
xmlTxtRd.AttributeCount + " Attributes");
this._listBox.Items.Add("The Attributes are:");
while (xmlTxtRd.MoveToNextAttribute())
{
this._listBox.Items.Add(xmlTxtRd.Name + " = " + xmlTxtRd.Value);
}
}
else
{
this._listBox.Items.Add("The Element " + xmlTxtRd.Name + " has no Attribute");
}
this._listBox.Items.Add("");
}
}
}
catch (XmlException xmlExp)
{
throw new XmlException(_errMsg + this._xmlPath + xmlExp.ToString());
}
finally
{
if (this.xmlTxtRd != null)
this.xmlTxtRd.Close();
}
}
/// ＜summary＞
/// 读取Xml文件的命名空间
/// ＜/summary＞
public void ReadXmlNamespace()
{
this._listBox.Items.Clear();
this.xmlTxtRd = new XmlTextReader(this._xmlPath);
try
{
while (xmlTxtRd.Read())
{
if (xmlTxtRd.NodeType == XmlNodeType.Element && xmlTxtRd.Prefix != "")
{
this._listBox.Items.Add("The Prefix " + xmlTxtRd.Prefix + " is
associated with namespace " + xmlTxtRd.NamespaceURI);
this._listBox.Items.Add("The Element with the
local name " + xmlTxtRd.LocalName + " is associated with" + " the
namespace " + xmlTxtRd.NamespaceURI);
}
if (xmlTxtRd.NodeType == XmlNodeType.Element && xmlTxtRd.HasAttributes)
{
while (xmlTxtRd.MoveToNextAttribute())
{
if (xmlTxtRd.Prefix != "")
{
this._listBox.Items.Add("The Prefix " + xmlTxtRd.Prefix + " is
associated with namespace " + xmlTxtRd.NamespaceURI);
this._listBox.Items.Add("The Attribute with the local name " + xmlTxtRd.LocalName + " is associated with the namespace " + xmlTxtRd.NamespaceURI);
}
}
}
}
}
catch (XmlException xmlExp)
{
throw new XmlException(_errMsg + this._xmlPath + xmlExp.ToString());
}
finally
{
if (this.xmlTxtRd != null)
this.xmlTxtRd.Close();
}
}
/// ＜summary＞
/// 读取整个Xml文件
/// ＜/summary＞
public void ReadXml()
{
string attAndEle = string.Empty;
this._listBox.Items.Clear();
this.xmlTxtRd = new XmlTextReader(this._xmlPath);
try
{
while (xmlTxtRd.Read())
{
if (xmlTxtRd.NodeType == XmlNodeType.XmlDeclaration)
this._listBox.Items.Add(string.Format("＜?{0} {1} ?＞", xmlTxtRd.Name, xmlTxtRd.Value));
else if (xmlTxtRd.NodeType == XmlNodeType.Element)
{
attAndEle = string.Format("＜{0} ", xmlTxtRd.Name);
if (xmlTxtRd.HasAttributes)
{
while (xmlTxtRd.MoveToNextAttribute())
{
attAndEle = attAndEle + string.Format("{0}='{1}' ", xmlTxtRd.Name, xmlTxtRd.Value);
}
}
attAndEle = attAndEle.Trim() + "＞";
this._listBox.Items.Add(attAndEle);
}
else if (xmlTxtRd.NodeType == XmlNodeType.EndElement)
this._listBox.Items.Add(string.Format("＜/{0}＞", xmlTxtRd.Name));
else if (xmlTxtRd.NodeType == XmlNodeType.Text)
this._listBox.Items.Add(xmlTxtRd.Value);
}
}
catch (XmlException xmlExp)
{
throw new XmlException(_errMsg + this._xmlPath + xmlExp.ToString());
}
finally
{
if (this.xmlTxtRd != null)
this.xmlTxtRd.Close();
}
}
}
}
