Example of XML traversing new nodes and modifying attributes in C #

XML Sample:

<?xml version= "1.0" encoding= "gb2312"?>  
<bookstore>  
  <book genre= "Li 2 Red" isbn= "2-3631-4" >  
    <title>cs from getting started to mastering </title>  
    <author> waiting  
    <price>58.3</price </author> >  
  </book>  
  <book genre= "Li Zhanhong" isbn= "2-3631-4" >  
    <title>cs from Getting started to mastering </title>  
    <author> small six </author>  
    <price>58.3</price>  
  </book>  
  <book45 genre= " Li Zhanhong "isbn=" 2-3631-4 ">  
    <title>cs from Getting started to mastering </title>  
    <author> Rhubarb </author>  
    <price>58.3</price>  
  </book45>  
</bookstore>

Test code:

<span style= "White-space:pre" > </span> xmldocument xmldoc = new XmlDocument ();  
        Xmldoc.load ("E:\\bookstore.xml"); Get all child nodes of the bookstore node//view this column more highlights: http://www.bianceng.cn/Programming/csharp/XmlNodeList nodelist = Xmldo C.selectsinglenode ("Bookstore").  
            ChildNodes; for (int i = 0; i < nodelist.count i++)//traverse each book node {//Convert child node type to XmlElement type Xmlele  
                ment XE = (XmlElement) nodelist.item (i); if (XE. Name = = "book" {//if the genre property value is "Li Zhanhong" if (XE). GetAttribute ("genre") = = "Li Zhanhong") {//continue to fetch all child nodes of XE child node XmlNodeList NLS = x  
                        E.childnodes; for (int j = 0; J < NLS). Count; J + +) {XmlElement xe2 = (XmlElement) nls. Item (j);//conversion type//title, author, Price will be in Xe2.  
                   In name, take the         if (Xe2. Name = = "Author")//If {Xe2 is found.  
                            innertext = "Karli Waston";//The modification} else//if not present new {Xe2.  
                            SetAttribute ("Newattribute", "new Attribute");  
                        }} else { If the value of the genre property is not "Li Zhanhong", it is modified to Li Zhanhong XE.  
                    SetAttribute ("Genre", "Li Zhanhong"); If the book node does not exist, then a new one under that node {Xm  
                    Lelement subelement = xmldoc.createelement ("Because this node is not book");  
                    Subelement.innerxml = "BigDog"; Xe.  
                AppendChild (subelement); } xmldoc.save ("E:\\bookstore.xml"),//save.

Modified XML:

<?xml version= "1.0" encoding= "gb2312"?>  
<bookstore>  
  <book genre= "Li Zhanhong" isbn= "2-3631-4" >  
    <title>cs from getting started to mastering </title>  
    <author> waiting  
    <price>58.3</price </author> >  
  </book>  
  <book genre= "Li Zhanhong" isbn= "2-3631-4" >  
    <title newattribute= "New properties" >cs from getting started to mastering </title>  
    <author>karli waston</author>  
    <price newattribute= "New Properties" >58.3</ price>  
  </book>  
  <book45 genre= "Li Zhanhong" isbn= "2-3631-4" >  
    <title>cs from entry to Mastery </ title>  
    <author> Rhubarb </author>  
    <price>58.3</price>  
    < Because this node is not book> bigdog</because this node is not book>  
  </book45>  
</bookstore>

If you add a node under the root node now, the code is as follows:

XmlDocument xmldoc = new XmlDocument ();  
Xmldoc.load ("E:\\bookstore.xml");  
XmlNode root = xmldoc.documentelement;  
XmlElement subelement = xmldoc.createelement ("New under Root node");  
Subelement.innerxml = "BigDog";  
Root. AppendChild (subelement);