TopXML XML DOM library : How to use InsertAfter() with XmlDocument?

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By	Sonu Kapoor
First Posted	02/20/2005
Times viewed	1096

How to use InsertAfter() with XmlDocument?

Summary How to use InsertAfter() with XmlDocument?

The InsertAfter() is a great function if you want to add elements to an already existing file. In this short example you will see how easily you can do this. Let's see how the XML file looks like.






  

    XML

    This is a list of XML articles.

    Yes

The following example will show you is how you can add a new element called SubCategory right after the MainCategory element.

Additional information
<%@ import namespace="System.Xml" %> <%@ page language="C#" debug="true"%> <script runat="server"> void page_load(object sender, System.EventArgs e){ XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(Server.MapPath("XmlDocumentWithInsertAfter.xml")); string xmlQuery="/CategoryList/Category/MainCategory[@ID='01'~"; // Find the specific node XmlNode xmlNode = xmlDoc.SelectSingleNode(xmlQuery); // Create a new element XmlElement xmlSubCat = xmlDoc.CreateElement("SubCategory"); // Set the value for the new element xmlSubCat.InnerText = "XPath"; // Find the common parent of the MainCategory node XmlNode commonParent = xmlNode.ParentNode; // Insert the node commonParent.InsertAfter(xmlSubCat, xmlNode); // Store the file with the new element xmlDoc.Save(Server.MapPath("XmlDocumentWithInsertAfter.xml")); // Our new xml file Response.Write(xmlDoc.InnerXml); } </script>

Further additional information
<?xml version="1.0" encoding="utf-8"?> <CategoryList> <Category> <MainCategory ID="01">XML</MainCategory> <SubCategory>XPath</SubCategory> <Description>This is a list my XML articles.</Description> <Active>true</Active> </Category> </CategoryList>

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