XML Operations Class

public class Xmlcontrol

{

protected string Strxmlfile;

protected XmlDocument objxmldoc = new XmlDocument ();

Public Xmlcontrol (String XmlFile)

{

//

TODO: Add the constructor program code here

//

Try

{

Objxmldoc.load (XmlFile);

}

catch (System.Exception ex)

{

Throw ex;

}

Strxmlfile = XmlFile;

}

Public DataView GetData (string xmlpathnode)

{

Find data. Returns a DataView

DataSet ds = new DataSet ();

StringReader read = new StringReader (Objxmldoc.selectsinglenode (Xmlpathnode). OuterXml);

Ds. READXML (read);

Return DS. Tables[0]. DefaultView;

}

public void Replace (String xmlpathnode,string Content)

{

Update node contents.

Objxmldoc.selectsinglenode (Xmlpathnode). innertext = Content;

}

public void Delete (string Node)

{

Deletes a node.

String mainnode = Node.substring (0,node.lastindexof ("/"));

Objxmldoc.selectsinglenode (Mainnode). RemoveChild (Objxmldoc.selectsinglenode (Node));

}

public void Insertnode (string mainnode,string childnode,string element,string Content)

{

Inserts a node and a child node of this node.

XmlNode Objrootnode = Objxmldoc.selectsinglenode (Mainnode);

XmlElement objchildnode = objxmldoc.createelement (Childnode);

Objrootnode.appendchild (Objchildnode);

XmlElement objelement = objxmldoc.createelement (Element);

Objelement.innertext = Content;

Objchildnode.appendchild (objelement);

}

public void Insertelement (string mainnode,string element,string attrib,string attribcontent,string Content)

{

Inserts a node with a property.

XmlNode objnode = Objxmldoc.selectsinglenode (Mainnode);

XmlElement objelement = objxmldoc.createelement (Element);

Objelement.setattribute (attrib,attribcontent);

Objelement.innertext = Content;

Objnode.appendchild (objelement);

}

public void Insertelement (string mainnode,string element,string Content)

{

Inserts a node with no attributes.

XmlNode objnode = Objxmldoc.selectsinglenode (Mainnode);

XmlElement objelement = objxmldoc.createelement (Element);

Objelement.innertext = Content;

Objnode.appendchild (objelement);

}

public void Save ()

{

Save the document file.

Try

{

Objxmldoc.save (Strxmlfile);

}

catch (System.Exception ex)

{

Throw ex;

}

objXMLDoc = null;

}

}

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

Instance application:

String strxmlfile = Server.MapPath ("Testxml.xml");

Xmlcontrol Xmltool = new Xmlcontrol (strxmlfile);

Data display

Dglist.datasource = Xmltool.getdata ("book/authors[isbn=/" 0002/"]");

Dglist.databind ();

Update element content

Xmltool.replace ("book/authors[isbn=/" 0002/"]/content", "PPPPPPP");

Xmltool.save ();

Add a new node

Xmltool.insertnode ("book", "Author", "ISBN", "0004");

Xmltool.insertelement ("book/author[isbn=/" 0004/"]", "Content", "aaaaaaaaa");

Xmltool.insertelement ("book/author[isbn=/" 0004/"]", "Title", "Sex", "Man", "IIIIIIII");

Xmltool.save ();

Deletes all content and attributes for a specified node

Xmltool.delete ("book/author[isbn=/" 0004/"]");

Xmltool.save ();

Deletes a child node of a specified node

Xmltool.delete ("book/authors[isbn=/" 0003/"]");

Xmltool.save ();