ASP.NET Tutorial/XML/XMLNodeType
Check XMLNodeType (VB.net)
<%@ Import Namespace="System.Xml" %>
<script language="VB" runat=server>
sub Page_Load(Sender as Object, e as EventArgs)
dim reader as XMLTextReader
dim i as integer
dim curPrice as Decimal
try
reader = new XMLTextReader(Server.MapPath("Data.xml"))
While reader.Read()
Select Case reader.NodeType
Case XMLNodeType.Element
if reader.HasAttributes then
for i = 0 to reader.AttributeCount - 1
Response.Write(reader.GetAttribute(i) & " ")
next
Response.Write("<br>")
end if
Case XMLNodeType.Text
Response.Write(reader.Value & "<br>")
End Select
End While
catch ex as Exception
Response.Write("Error accessing XML file")
finally
reader.close
end try
end sub
</script>
<html>
<body>
</body>
</html>
File: Data.xml
<?xml version="1.0"?>
<bookstore>
<book genre="asdf">
<title>asdf</title>
<author>
<first-name>asdf</first-name>
<last-name>asdf</last-name>
</author>
<price>asdf</price>
</book>
<book genre="asdf">
<title>asdf</title>
<author>
<first-name>asdf</first-name>
<last-name>asdf</last-name>
</author>
<price>asdf</price>
</book>
<book genre="asdf">
<title>asdf</title>
<author>
<first-name>asdf</first-name>
<last-name>asdf</last-name>
</author>
<price>asdf</price>
</book>
</bookstore>
Get Node by name
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Search" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Literal id="XmlText" runat="server"></asp:Literal>
</div>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml;
using System.Text;
public partial class Search : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string xmlFile = Server.MapPath("Data.xml");
XmlDocument doc = new XmlDocument();
doc.Load(xmlFile);
StringBuilder str = new StringBuilder();
XmlNodeList nodes = doc.GetElementsByTagName("Title");
foreach (XmlNode node in nodes)
{
str.Append("Found: <b>");
string name = node.ChildNodes[0].Value;
str.Append(name);
str.Append("</b><br>");
if (name == "star 1")
{
XmlNode parent = node.ParentNode;
XmlNodeList childNodes = ((XmlElement)parent).GetElementsByTagName("Star");
foreach (XmlNode childNode in childNodes)
{
str.Append("Found Star: ");
str.Append(childNode.ChildNodes[0].Value);
str.Append("<br>");
}
}
}
XmlText.Text = str.ToString();
}
}
File: Data.xml
<?xml version="1.0"?>
<DvdList>
<DVD ID="1" Category="Category 1">
<Title>title 1</Title>
<Director>directory 2</Director>
<Price>1</Price>
<Starring>
<Star>star 1</Star>
<Star>star 2</Star>
</Starring>
</DVD>
</DvdList>
Read XML by node type
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="WriteAndReadXml" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Literal id="XmlText" runat="server"></asp:Literal>
</div>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml;
using System.Text;
public partial class WriteAndReadXml : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string xmlFile = Server.MapPath("Data.xml");
XmlTextReader reader = new XmlTextReader(xmlFile);
StringBuilder str = new StringBuilder();
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.XmlDeclaration:
str.Append("XML Declaration: <b>");
str.Append(reader.Name);
str.Append(" ");
str.Append(reader.Value);
str.Append("</b><br>");
break;
case XmlNodeType.Element:
str.Append("Element: <b>");
str.Append(reader.Name);
str.Append("</b><br>");
break;
case XmlNodeType.Text:
str.Append(" - Value: <b>");
str.Append(reader.Value);
str.Append("</b><br>");
break;
case XmlNodeType.rument:
str.Append("Comment: <b>");
str.Append(reader.Value);
str.Append("</b><br>");
break;
}
if (reader.AttributeCount > 0)
{
while (reader.MoveToNextAttribute())
{
str.Append(" - Attribute: <b>");
str.Append(reader.Name);
str.Append("</b> Value: <b>");
str.Append(reader.Value);
str.Append("</b><br>");
}
}
}
reader.Close();
XmlText.Text = str.ToString();
}
}
File: Data.xml
<?xml version="1.0"?>
<DvdList>
<DVD ID="1" Category="Category 1">
<Title>title 1</Title>
<Director>directory 2</Director>
<Price>1</Price>
<Starring>
<Star>star 1</Star>
<Star>star 2</Star>
</Starring>
</DVD>
<DVD ID="2" Category="Category 2">
<Title>title 2</Title>
<Director>directory 2</Director>
<Price>2</Price>
<Starring>
<Star>star 3</Star>
<Star>star 4</Star>
</Starring>
</DVD>
</DvdList>