. Net XML operation instructions

2. Using system. xml;
4. // Initialize an XML instance
6. Xmldocument xml = new xmldocument ();
8. // Import the specified XML file
10. XML. Load (PATH );
12. XML. Load (httpcontext. Current. server. mappath ("~ /File/bookstore. xml "));
14. // Specify a node
16. Xmlnode root = xml. selectsinglenode ("/root ");
18. // Obtain all direct subnodes under a node
20. Xmlnodelist childlist = root. childnodes;
22. // Determine whether a subnode exists under the node
24. Root. haschildnodes;
26. // Obtain the set of nodes with the same name as the peer node
28. Xmlnodelist nodelist = xml. selectnodes ("/root/News ");
30. // Generate a new node
32. Xmlelement node = xml. createelement ("news ");
34. // Add a node to a specified node as its subnode
36. Root. appendchild (node );
38. // Add the node to a subnode under the specified Node
40. Root. insertbefore (node, root. childenodes [I]);
42. // Create a property for the specified node and assign a value to it
44. Node. setattribute ("ID", "11111 ");
46. // Add a subnode to a specified Node
48. Root. appendchild (node );
50. // Obtain the specified attribute value of a specified Node
52. String id = node. attributes ["ID"]. value;
54. // Obtain the text in the specified Node
56. String content = node. innertext;
58. // Save the XML file
60. String Path = server. mappath ("~ /File/bookstore. xml ");
62. XML. Save (PATH );
64. // Or use: XML. Save (httpcontext. Current. server. mappath ("~ /File/bookstore. xml "));