Used
Classes
XmlDocument
XmlNodeList
Before running the code our xml looks like this:
<?xml version="1.0"
encoding="utf-8"?>
<CategoryList>
<Category ID="01">
<MainCategory>XML</MainCategory>
<Description>This is a list my XML
articles.</Description>
<Active>true</Active>
</Category>
</CategoryList>
After running the code our xml becomes this:
<?xml version="1.0"
encoding="utf-8"?>
<CategoryList>
<Category ID="01">
<MainCategory>ASP.NET</MainCategory>
<Description>This is now my ASP.NET
list.</Description>
<Active>false</Active>
</Category>
</CategoryList>
The code which does that looks like this:
<%@ Import Namespace="System.Data"
%>
<%@ Import Namespace="System.Xml"
%>
<%@ Page Language="C#"
Debug="true" %>
<script runat="server">
void Page_Load(object sender, System.EventArgs e){
if(!Page.IsPostBack){
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("categories.xml"));
XmlNodeList nodeList =
xmlDoc.SelectNodes("/CategoryList/Category[@ID='01']");
// update MainCategory
nodeList[0].ChildNodes[0].InnerText =
"ASP.NET";
// update Description
nodeList[0].ChildNodes[1].InnerText = "This is
now my ASP.NET list.";
// update Active
nodeList[0].ChildNodes[2].InnerText =
"false";
// Don't forget to save the file
xmlDoc.Save(Server.MapPath("categories.xml"));
Response.Write("XML File updated!");
}
}
</script>
