read:
// Open a file (assuming web.config in the root directory) String filename = server.mappath ("/") @ "WebApplication1 / Web.config"; XmLDocument Xmldoc = New XmLDocUment (); xmlDoc.load (filename) ;
// Get top-level node list XMLNodelist Topm = XmLDoc.DocumentElement.childNodes; Foreach (Xmlelement Element in Topm) {if (Element.name.tolower () == "Appsettings") {
// Get the child's node xmlnodelist nodelist = element.childNodes;
IF (Nodelist.count> 0) {//dropdownlist1.items.clear ();
Foreach (Xmlelement El in nodelist) // read element value {//dropdownlist1.items.add (ittributes ["key"key"].innerxml); //this.TextBox2.text =L.attributes ["key "]. InnerText; this.TextBox2.text = el.attributes ["key"]. Value; this.label1.text = el.attributes ["value"]. Value;
// The same can be modified here, and SAVE is behind.
// el.attributes ["value"]. Value = this.TextBox2.text;
}
}
} Xmldoc.save (filename);
Add an element under a node and set the value:
IF (element.name.tolower () == "appsettings") {
XmLelement Elem = XmLDoc.createElement ("add"); element.Appendchild (elem); elem.innertext = "ltp";
XMLDoc.save (filename);
effect:
LTP
Add an element under a node and add two properties:
IF (element.name.tolower () == "appsettings") {
XmLelement Elem = XmLDoc.createElement ("add"); element.Appendchild (elem);
XMlattribute XA = XmLDoc.createAttribute ("key"); xa.value = "ltp";
Xmlattribute XA2 = Xmldoc.createAttribute ("Value"); xa2.value = "first";
Elem.setttributenode (XA); Elem.SetaTRibutenode (XA2);
XMLDoc.save (filename);} Effect:
// Add empty element:
XMLNode node = doc.createElement (groupname); node.innertext = ""; doc.lastchild.Appendchild (node);
Doc.save (XMLFile);
Delete a node element
String itemname = this.listbox1.selectedItem.toString ();
This.ListBox1.items.Remove (this.listbox1.selecteditem);
// begin del xmlfile xmldocument doc = new xmldocument (); doc.load (xmlfile);
XMLnodelist Topm = doc.documentelement.childNodes; Foreach (Xmlelement Element In Topm) {if (element.name == this.comboBOBOX1.TEXT) {
/ / Get the child's child node xmlnodelist nodelist = element.childNodes; Foreach (Xmlelement El in nodelist) // read element value {if (El.attributes ["key"]. Value == itemname) {Element.removeChild (EL }
} // Circulating element} // Get group
} // cycle group
Doc.save (XMLFile); / / must save it, otherwise you don't work
// Screening data
private void Reader_Xml (string pathFlie) {XmlDocument Xmldoc = new XmlDocument (); Xmldoc.Load (pathFlie); XmlNodeList Record1 = Xmldoc.DocumentElement.SelectNodes (Code [@ id = '1']) int f = 0; foreach (XmlNode Xnode in Record1) {
}
