XmlHelper

1 2 3 4 5 6

using System;     using System.Collections.Generic;     using System.Data;     using System.IO;     using System.Xml;     using System.Xml.XPath;

 

1 2 3 4 5 6 7 8

public class XmlHelper    {        private XPathNavigator nav;        private XmlNode node;        private XPathNodeIterator NodeIter;        protected XmlDocument objXmlDoc = new XmlDocument();        private string strExpression;        protected string strXmlFile;

 

 

1 2 3 4 5 6 7 8 9 10 11 12

public XmlHelper(string XmlFile)  {      try        {           this.objXmlDoc.Load(XmlFile);          }          catch (Exception ex)          {              throw ex;          }          this.strXmlFile = XmlFile;      }

 

 

1 2 3 4 5 6 7 8 9 10

public void Delete(string Node)     {         string mainNode = Node.Substring(0, Node.LastIndexOf("/"));         this.objXmlDoc.SelectSingleNode(mainNode).RemoveChild(this.objXmlDoc.SelectSingleNode(Node));     }       public void DeleteChildren(string Node)     {         this.objXmlDoc.SelectSingleNode(Node).RemoveAll();     }

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

public DataView GetData(string XmlPathNode)      {          DataSet ds = new DataSet();          this.nav = this.objXmlDoc.CreateNavigator();          this.nav = this.nav.SelectSingleNode(XmlPathNode);          if (this.nav == null)          {              throw new Exception("没有找到结点");          }          StringReader read = new StringReader(this.nav.get_OuterXml());          ds.ReadXml(read);          if (ds.Tables.Count > 0)          {              return ds.Tables[0].DefaultView;          }          return null;      }

 

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

public string GetElementValue(string MainNode)       {           this.nav = this.objXmlDoc.CreateNavigator();           this.strExpression = string.Format("{0}", MainNode);           this.nav = this.nav.SelectSingleNode(this.strExpression);           return this.nav.get_Value();       }         public string GetElementValue(string MainNode, string Element)       {           this.nav = this.objXmlDoc.CreateNavigator();           this.strExpression = string.Format("{0}/{1}", MainNode, Element);           this.nav = this.nav.SelectSingleNode(this.strExpression);           return this.nav.get_Value();       }

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

public string GetNodeAttrValue(string MainNode, string Attr)       {           this.nav = this.objXmlDoc.CreateNavigator();           this.strExpression = string.Format("{0}@{1}", MainNode, Attr);           this.nav.SelectSingleNode(this.strExpression);           return this.nav.get_Value();       }         public List<string> GetSubNodes(string MainNode)       {           List<string> lst = new List<string>();           this.nav = this.objXmlDoc.CreateNavigator();           this.nav = this.nav.SelectSingleNode(MainNode);           this.NodeIter = this.nav.SelectChildren(XPathNodeType.Element);           foreach (XPathNavigator n in this.NodeIter)           {               lst.Add(n.get_Value());           }           return lst;       }

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

public void InsertElement(string MainNode, string Element, string Content)       {           XmlNode objNode = this.objXmlDoc.SelectSingleNode(MainNode);           XmlElement objElement = this.objXmlDoc.CreateElement(Element);           objElement.InnerText = Content;           objNode.AppendChild(objElement);       }         public void InsertElement(string MainNode, string Element, string Attrib, string AttribContent, string Content)       {           XmlNode objNode = this.objXmlDoc.SelectSingleNode(MainNode);           XmlElement objElement = this.objXmlDoc.CreateElement(Element);           objElement.SetAttribute(Attrib, AttribContent);           objElement.InnerText = Content;           objNode.AppendChild(objElement);       }         public void InsertNode(string MainNode, string ChildNode, string Element, string Content)       {           XmlNode objRootNode = this.objXmlDoc.SelectSingleNode(MainNode);           XmlElement objChildNode = this.objXmlDoc.CreateElement(ChildNode);           objRootNode.AppendChild(objChildNode);           XmlElement objElement = this.objXmlDoc.CreateElement(Element);           objElement.InnerText = Content;           objChildNode.AppendChild(objElement);       }

 

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

public bool IsExists(string Node)       {           try           {               if (this.objXmlDoc.SelectSingleNode(Node) == null)               {                   return false;               }               return true;           }           catch (Exception)           {               return false;           }       }

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

public void RemoveAll(string Node)         {             XmlNodeList xnl = this.objXmlDoc.SelectNodes(Node);             string mainNode = Node.Substring(0, Node.LastIndexOf("/"));             foreach (XmlNode xn in xnl)             {                 xn.RemoveAll();             }         }           public void Replace(string XmlPathNode, string Content)         {             this.objXmlDoc.SelectSingleNode(XmlPathNode).InnerText = Content;         }           public void Save()         {             try             {                 this.objXmlDoc.Save(this.strXmlFile);             }             catch (Exception ex)             {                 throw ex;             }             this.objXmlDoc = null;         }     } }

    本文转自曾祥展博客园博客，原文链接：http://www.cnblogs.com/zengxiangzhan/archive/2010/01/19/1651836.html，如需转载请自行联系原作者