Process read/write XML Summary In. Net C #

Using system. xml;

 

Initialize an XML instance

Xmldocument xml = new xmldocument ();

Import a specified XML file

XML. Load (PATH );

XML. Load (httpcontext. Current. server. mappath ("../AA. xml "));

Specify a node

Xmlnode root = xml. selectsinglenode ("/root ");

Obtain all direct subnodes under a node

Xmlnodelist childlist = root. childnodes;

Determines whether a subnode exists under the node.

Root. haschildnodes;

Obtains a set of same-level nodes with the same name.

Xmlnodelist nodelist = xml. selectnodes ("/root/News ");

Generate a new node

Xmlelement node = xml. createelement ("news ");

Add a node to a specified node as its subnode

Root. appendchild (node );

Add a node to a subnode under a specified Node

Root. insertbefore (node, root. childenodes [I]);

Creates a new attribute for a specified node and assigns a value to it.

Node. setattribute ("ID", "11111 ");

Add a subnode to a specified Node

Root. appendchild (node );

Obtains the attribute value of a specified node.

String id = node. attributes ["ID"]. value;

Obtain text from a specified Node

String content = node. innertext;

Save the XML file

XML. Save (PATH );

XML. Save (httpcontext. Current. server. mappath ("../AA. xml "));