Read XML (Recursive)



Document Description of XML
<?xml version= "1.0" encoding= "Utf-8" >

Each XML document must have, and can only have one node (XML case sensitive)

Tags generally exist in pairs, such as:<a></a>, but if the label has no sub data, it can be written as a closed <a/>

The storage structure of XML has the following two kinds
< tag name > value </label name >
< Tag Name property = Value Property 2 = value/>

For example:
<person name= "John" age= "gender=" "1"/>

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

XML uses <!--This is the annotation content--> to comment

<?xml version= "1.0" encoding= "Utf-8"?>
<studetn>
	<stuinfo id= "001" >
		<name> John </name>
		<age>25</age>
		<Gender>1</Gender>
	</stuinfo>
	< Stuinfo id= "002" >
		<name> Dick </name>
		<age>25</age>
		<gender>1</ gender>
	</stuinfo>
	<stuinfo id= "003" >
		<name> Harry </name>
		<age >25</age>
		<Gender>1</Gender>
	</stuinfo>
</studetn>

Another annotation of xml: <! [cdata[. ...]]. >

<news>
	<title> title </title>
	<content><a href= "http://www.baidu.com" > today's Headline News </a></content> 
	
	<!--problem comes, I just want to put a hyperlink in the content tag, but I this hyperlink is a <a></a> such a pair appears, XML will recognize it as a node, I don't like to make this a tag into a node, just think of him as content, how to do it. -->
</news>

Take a look at the following annotation method: <! [cdata[. ...]]. >

<?xml version= "1.0" encoding= "gb2312"?>
<news>
<title> title </title>
<content ><! [Cdata[<a href= "http://www.baidu.com" > today's Headline News </a>]]></content> 
</news>

To create an XML document with a C # statement

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Text;
Using System.Threading.Tasks;

Using System.Xml;
        Namespace XML {class Program {///<summary>///create an XML document///</summary> <param name= "args" ></param> static void Main (string[] args) {//namespace: Syst Em.
            XML;         Class Library: XmlDocument document//XmlElement element//XmlAttribute attribute//  XmlText content XmlDocument xdoc = new XmlDocument ();

            Represents an XML document. All elements use the document node to create XmlDeclaration Xdec = Xdoc.
            Createxmldeclaration ("1.0", "gb2312", null); Xdoc. AppendChild (XDEC);

            Adds the specified node to the end of the list of child nodes for the node. XmlElement Xele = Xdoc.
            createelement ("root"); Xdoc. AppendChild (Xele);

            Adds the specified node to the end of the list of child nodes for the node. XmlAttribute xattr = Xdoc.
            CreateAttribute ("id"); Xattr.value = "101"; Gets or setsThe value of the node. XmlText txt = xdoc.
            createTextNode ("I am a text node"); Xele. AppendChild (TXT);

            Adds the specified node to the end of the list of child nodes for the node. Xele. Attributes.append (XATTR);

            Inserts the specified attribute into the collection as the last node in the collection. Xdoc. Save ("D:/xml.")

        XML "); }
    }
}

Create a good XML document content:

Find the node: for example, under my e disk, there is a xml.xml file, and I want to get its parent node based on a value.

<?xml version= "1.0" encoding= "Utf-8"?>
<studetn>
	<stuinfo id= "001" >
		<name> John </name>
		<age>25</age>
		<Gender>1</Gender>
	</stuinfo>
	< Stuinfo id= "002" >
		<name> Dick </name>
		<age>25</age>
		<gender>1</ gender>
	</stuinfo>
	<stuinfo id= "003" >
		<name> Harry </name>
		<age >25</age>
		<Gender>1</Gender>
	</stuinfo>
</studetn>

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Text;
Using System.Threading.Tasks;

Using System.Xml.Linq; Namespace READXML {class Program {///<summary>///finds the parent node (gets all the contents of the parent node) based on the value of one content
           /</summary>///<param name= "args" ></param> static void Main (string[) args) { XDocument xdoc= xdocument.load ("E:/xml.xml")//from a file to load the XML document//the found content into the XElement, so we build a xelemen

           The generic collection of T, because the node we are looking for may have multiple list<xelement> List = new list<xelement> (); Searchelements (Xdoc.

        Root, list); public static void Searchelements (XElement ele, list<xelement> List) {//First traverse all child sections of Ele Point foreach (XElement item in Ele.
            Elements ())//elements () represents all the child nodes of the Ele node. That is, a collection of child elements. {//Determine if the name of this element is named, if the value stored in name is "John" if (item).
Name.localname = = "Name") {                    if (item. Value = = "John") {list. ADD (item. Parent)//Add the negative node of the "John" node to the list}///If there are child nodes in the item recursively (refer to recursion for reference ASP.N <a target=_blank href= "http://blog.csdn.net/fanbin168/article/details/45623263" target= "_blank" in et articles >
            TreeView Tree Menu node </a><span class= "Gray" ></span>) searchelements (item, list);
 }
        }
    }
}