<% @ Page Language = "C #" codebehind = "xdoc. aspx. cs" autoeventwireup = "false" inherits = "XML. xdoc" %>
<! Doctype HTML public "-// W3C // dtd html 4.0 transitional // en">
<HTML>
<Head>
<Title> xdoc </title>
<Meta content = "Microsoft Visual Studio. NET 7.1" name = "generator">
<Meta content = "C #" name = "code_language">
<Meta content = "JavaScript" name = "vs_defaultclientscript">
<Meta content = "http://schemas.microsoft.com/intellisense/ie5" name = "vs_targetschema">
</Head>
<Body ms_positioning = "gridlayout">
<Form ID = "form1" method = "Post" runat = "server">
<Font face = "">
<Asp: DataGrid id = "DG" style = "Z-INDEX: 101; left: 48px; position: absolute; top:
56px "runat =" server"
Forecolor = "black" borderstyle = "NONE" borderwidth = "1px" bordercolor = "# dedfde"
Backcolor = "white"
Cellpadding = "4" gridlines = "vertical" autogeneratecolumns = "false"
Width = "432px">
<Selecteditemstyle font-bold = "true" forecolor = "white"
Backcolor = "# ce5d5a"> </selecteditemstyle>
<Alternatingitemstyle backcolor = "white"> </alternatingitemstyle>
<Itemstyle backcolor = "# f7f7de"> </itemstyle>
<Headerstyle font-bold = "true" forecolor = "white"
Backcolor = "# 6b696b"> <Footerstyle backcolor = "# cccc99"> </footerstyle>
<Columns>
<Asp: boundcolumn datafield = "name" headertext = "name"> </ASP: boundcolumn>
<Asp: boundcolumn datafield = "city" headertext = "city"> </ASP: boundcolumn>
<Asp: boundcolumn datafield = "email" headertext = "mail location
Address "> </ASP: boundcolumn>
<Asp: boundcolumn datafield = "time" headertext = "time"> </ASP: boundcolumn>
</Columns>
<Pagerstyle horizontalalign = "right" forecolor = "black" backcolor = "# f7f7de"
Mode = "numericpages"> </pagerstyle>
</ASP: DataGrid> <asp: Label id = "label1" style = "Z-INDEX: 102; left: pixel; position:
Absolute; top: 8px "runat =" server"
Width = "336px" borderwidth = "2px" borderstyle = "ridge" font-size = "X-large" font
-Bold = "true" forecolor = "red"> xmldocument class mining </ASP: Label> <asp: dropdownlist id = "DDL" style = "Z-
Index: 103; left: 128px; position: absolute; top: 280px"
Runat = "server"> </ASP: dropdownlist> <asp: Label id = "label2" style = "Z-INDEX: 104; left: 64px;
Position: absolute; top: 280px "runat =" server "> name: </ASP: Label> <asp: button id =" button1"
Style = "Z-INDEX: 105; left: 64px; position: absolute; top: 328px" runat = "server"
Width = "64px" text = "query"> </ASP: button> <asp: Label id = "label3" style = "Z-INDEX:
106; left: 64px; position: absolute; top: 384px "runat =" server "> email address: </ASP: Label> <asp: button
Id = "button2" style = "Z-INDEX: 107; left: 152px; position: absolute; top: 328px" runat = "server"
Width = "64px" text = "delete"> </ASP: button> <asp: button id = "button3" style = "Z-
Index: 108; left: 432px; position: absolute; top: 280px "runat =" server"
Width = "56px" text = "add" Height = "80px"> </ASP: button> <asp: textbox id = "TBN"
Style = "Z-INDEX: 109; left: 152px; position: absolute; top: 384px" runat = "server"
Width = "328px"> </ASP: textbox> <asp: button id = "button4" style = "Z-INDEX: 110;
Left: 64px; position: absolute; top: 416px "runat =" server"
Width = "424px" text = "Modify email address"> </ASP: button>
<Asp: textbox id = "TBNA" style = "Z-INDEX: 111; left: 312px; position: absolute; top:
280px "runat =" server"
Width = "pixel PX"> </ASP: textbox>
<Asp: textbox id = "TBC" style = "Z-INDEX: 112; left: 312px; position: absolute; top:
312px "runat =" server"
Width = "pixel PX" Height = "24px"> </ASP: textbox>
<Asp: textbox id = "tbe" style = "Z-INDEX: 113; left: 312px; position: absolute; top:
344px "runat =" server"
Width = "pixel PX" Height = "24px"> </ASP: textbox>
<Asp: Label id = "label4" style = "Z-INDEX: 114; left: pixel PX; position: absolute; top:
280px "runat =" server "> name: </ASP: Label>
<Asp: Label id = "label5" style = "Z-INDEX: 115; left: pixel PX; position: absolute; top:
312px "runat =" server "> City: </ASP: Label>
<Asp: Label id = "label6" style = "Z-INDEX: 116; left: pixel PX; position: absolute; top:
344px "runat =" server "> Email: </ASP: Label> </font> </form>
</Body>
</Html>
CS files
Using system;
Using system. collections;
Using system. componentmodel;
Using system. Data;
Using system. drawing;
Using system. Web;
Using system. Web. sessionstate;
Using system. Web. UI;
Using system. Web. UI. webcontrols;
Using system. Web. UI. htmlcontrols;
// Two new namespaces are introduced.
Using system. xml;
Using system. xml. XPath;
Namespace XML
{
/** // <Summary>
/// Summary of xdoc.
/// </Summary>
Public class xdoc: system. Web. UI. Page
{
Protected system. Web. UI. webcontrols. Label label1;
Protected system. Web. UI. webcontrols. Label label2;
Protected system. Web. UI. webcontrols. Button button1;
Protected system. Web. UI. webcontrols. Label label3;
Protected system. Web. UI. webcontrols. Button button2;
Protected system. Web. UI. webcontrols. Button button3;
Protected system. Web. UI. webcontrols. DataGrid DG;
Protected system. Web. UI. webcontrols. dropdownlist DDL;
Protected system. Web. UI. webcontrols. textbox TBN;
Protected system. Web. UI. webcontrols. Label label4;
Protected system. Web. UI. webcontrols. Label label5;
Protected system. Web. UI. webcontrols. Label label6;
Protected system. Web. UI. webcontrols. textbox TBNA;
Protected system. Web. UI. webcontrols. textbox TBC;
Protected system. Web. UI. webcontrols. textbox tbe;
Protected system. Web. UI. webcontrols. Button button4;
Private void page_load (Object sender, system. eventargs E)
{// You can see the action name as it is loaded.
If (! Page. ispostback)
{
Fill ();
}
}
// Code generated by the web form designer # code generated by the region web Form Designer
Override protected void oninit (eventargs E)
{
//
// Codegen: This call is required by the ASP. NET web form designer.
//
Initializecomponent ();
Base. oninit (E );
}
/** // <Summary>
/// The designer supports the required methods-do not use the code editor to modify
/// Content of this method.
/// </Summary>
Private void initializecomponent ()
{
This. button1.click + = new system. eventhandler (this. button#click );
This. button2.click + = new system. eventhandler (this. button2_click );
This. button3.click + = new system. eventhandler (this. button3_click );
This. button4.click + = new system. eventhandler (this. button4_click );
This. Load + = new system. eventhandler (this. page_load );
}
Private void fill ()
{// Binding method
Dataset DS = new dataset ();
DS. readxml (server. mappath ("\ XML \ doc. xml "));
DG. datasource = Ds. Tables [0];
DG. databind ();
Xmldocument XD = new xmldocument ();
XD. Load (server. mappath ("\ XML \ doc. xml "));
System. xml. xmlnodelist xnl = XD. getelementsbytagname ("name ");
DDL. Items. Clear ();
For (INT I = 0; I <xnl. Count; I ++)
{
DDL. Items. Add (xnl [I]. innertext );
}
}
Private void button#click (Object sender, system. eventargs E)
{// Query action
Xmldocument XD = new xmldocument ();
XD. Load (server. mappath ("\ XML \ doc. xml "));
TBN. Text = XD. selectsinglenode ("// user
[Name = '"+ DDL. selecteditem. Text +"'] "). childnodes. Item (2). innertext. tostring ();
}
Private void button2_click (Object sender, system. eventargs E)
{// Delete action
Xmldocument xdoc = new xmldocument ();
Xdoc. Load (server. mappath ("\ XML \ doc. xml "));
Xmlnodelist xnl = xdoc. selectsinglenode ("dbguest"). childnodes;
Foreach (xmlnode Xn in xnl)
{
Xmlelement Xe = (xmlelement) xn;
Xmlnodelist node = Xe. getelementsbytagname ("name"); // you can call this operation to find the name row.
If (node. Count> 0)
{
If (node [0]. innertext = DDL. selecteditem. Text) // if the name of the current node and the drop-down list are uploaded
To delete
{
Xe. removeall (); // 111
}
Break;
}
}
Xdoc. Save (server. mappath ("\ XML \ doc. xml "));
Fill ();
}
Private void button3_click (Object sender, system. eventargs E)
{// Add action
String name = This. TBNA. Text. tostring ();
String city = This. TBC. Text. tostring ();
String email = This. tbe. Text. tostring ();
Xmldocument XD = new xmldocument ();
XD. Load (server. mappath ("\ XML \ doc. xml "));
// Find the dbguest Node
Xmlnode xn = XD. selectsinglenode ("dbguest ");
// Create a user Node
Xmlelement xe_u = XD. createelement ("user ");
// Create a name Element
Xmlelement xe_a1 = XD. createelement ("name ");
Xe_a1.innertext = Name; // set the value of this element.
Xe_u.appendchild (xe_a1); // Insert the created element to the Name node.
Xmlelement xe_a2 = XD. createelement ("city ");
Xe_a2.innertext = city;
Xe_u.appendchild (xe_a2 );
Xmlelement xe_a3 = XD. createelement ("email ");
Xe_a3.innertext = Email;
Xe_u.appendchild (xe_a3 );
Xmlelement xe_a4 = XD. createelement ("time ");
Xe_a4.innertext = (datetime. Now). tostring ();
Xe_u.appendchild (xe_a4 );
// Insert the user node to dbguest
XN. appendchild (xe_u );
// Save the XML file
XD. Save (server. mappath ("\ XML \ doc. xml "));
Fill ();
}
Private void button4_click (Object sender, system. eventargs E)
{// Modify email address action
Xmldocument XD = new xmldocument ();
XD. Load (server. mappath ("\ XML \ doc. xml"); // load the XML file
Xmlnodelist xnl = XD. selectsinglenode ("dbguest"). childnodes; // retrieve all subsections of the dbguest Node
Point
Foreach (xmlnode Xn in xnl) // iterate all subnodes
{
Xmlelement Xe = (xmlelement) xn; // converts the child nodes that are iterated to the xmlelement type
Xmlnodelist xnl2 = Xe. getelementsbytagname ("name"); // return data of all name Columns
If (xnl2.count> 0) // if the value is greater than zero,
{
If (xnl2 [0]. innertext = DDL. selecteditem. Text) // If This column has
Data with the same value
{
Xmlnodelist xnl3 = Xe. childnodes; // obtain all the following subnodes.
Foreach (xmlnode xn1 in xnl3) // reiterate the subset
{
Xmlelement xe2 = (xmlelement) xn1; // Conversion Type
If (xe2.name = "email") // If the node name is email
{
Xe2.innertext = TBN. Text; // replace the value of this node with the value in the text box.
Break;
}
}
Break;
}
}
}
XD. Save (server. mappath ("\ XML \ doc. xml "));
Fill ();
}
}
}
XML file
<? XML version = "1.0" encoding = "UTF-8"?>
<Dbguest>
<User>
<Name> Day bombing </Name>
<City> Jiangyou </city>
<Email> 7665@fds.com </Email>
<Time> 16:10:56 </time>
</User>
<User>
<Name> Tian hongchuan </Name>
<City> Mianyang </city>
<Email> th@DFs.com </Email>
<Time> 16:06:51 </time>
</User>
<User>
<Name> Huang Xiaomei </Name>
<City> Nanchong </city>
<Email> 5543@ds.com </Email>
<Time> 16:07:15 </time>
</User>
</Dbguest>
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