XML操作类的使用

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using System;

using System.Data;

using System.Configuration;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using System.Xml;

using System.IO;

/// <summary>

///XmlControl 的摘要说明

/// </summary>

public class XmlControl

{

protected string strXmlFile;

protected XmlDocument objXmlDoc = new XmlDocument();

public XmlControl(string XmlFile)

{

//TODO: 在此处添加构造函数逻辑

try

{

objXmlDoc.Load(XmlFile);

}

catch (Exception ex)

{

throw ex;

}

strXmlFile = XmlFile;

}

public DataView GetData(string XmlPathNode)

{

//查找数据。返回一个DataView

DataSet ds = new DataSet();

StringReader read = new StringReader(objXmlDoc.SelectSingleNode(XmlPathNode).OuterXml);

ds.ReadXml(read);

return ds.Tables[0].DefaultView;

}

public void Replace(string XmlPathNode, string Content)

{

//更新节点内容。

objXmlDoc.SelectSingleNode(XmlPathNode).InnerText = Content;

}

public void Delete(string Node)

{

//删除一个节点。

string mainNode = Node.Substring(0, Node.LastIndexOf("/"));

objXmlDoc.SelectSingleNode(mainNode).RemoveChild(objXmlDoc.SelectSingleNode(Node));

}

public void InsertNode(string MainNode, string ChildNode, string Element, string Content)

{

//插入一节点和此节点的一子节点。

XmlNode objRootNode = objXmlDoc.SelectSingleNode(MainNode);

XmlElement objChildNode = objXmlDoc.CreateElement(ChildNode);

objRootNode.AppendChild(objChildNode);

XmlElement objElement = objXmlDoc.CreateElement(Element);

objElement.InnerText = Content;

objChildNode.AppendChild(objElement);

}

public void InsertElement(string MainNode, string Element, string Attrib, string AttribContent, string Content)

{

//插入一个节点，带一属性。

XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);

XmlElement objElement = objXmlDoc.CreateElement(Element);

objElement.SetAttribute(Attrib, AttribContent);

objElement.InnerText = Content;

objNode.AppendChild(objElement);

}

public void InsertElement(string MainNode, string Element, string Content)

{

//插入一个节点，不带属性。

XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);

XmlElement objElement = objXmlDoc.CreateElement(Element);

objElement.InnerText = Content;

objNode.AppendChild(objElement);

}

public void Save()

{

//保存文檔。

try

{

objXmlDoc.Save(strXmlFile);

}

catch (System.Exception ex)

{

throw ex;

}

objXmlDoc = null;

}

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

实例应用：

string strXmlFile =Server.MapPath("TestXml.xml");
XmlControl xmlTool = new XmlControl(strXmlFile);

// 数据显视
// dgList.DataSource =xmlTool.GetData("Book/Authors[ISBN=/"0002/"]");
// dgList.DataBind();

// 更新元素内容
//xmlTool.Replace("Book/Authors[ISBN=/"0002/"]/Content","ppppppp");
// xmlTool.Save();

// 添加一个新节点
//xmlTool.InsertNode("Book","Author","ISBN","0004");
//xmlTool.InsertElement("Book/Author[ISBN=/"0004/"]","Content","aaaaaaaaa");
//xmlTool.InsertElement("Book/Author[ISBN=/"0004/"]","Title","Sex","man","iiiiiiii");
// xmlTool.Save();

// 删除一个指定节点的所有内容和属性
//xmlTool.Delete("Book/Author[ISBN=/"0004/"]");
// xmlTool.Save();

// 删除一个指定节点的子节点
// xmlTool.Delete("Book/Authors[ISBN=/"0003/"]");
// xmlTool.Save();