Summary How to remove xml elements using RemoveChild() with XmlDocument?

In the other two examples in the XmlDocument section, you have seen how to add and update a xml file. To finish the three main tasks (add/update/delete) of data, I will cover in this example the deletion process. What I will show you is how you can delete specific nodes with the RemoveChild function. The RemoveChild() function is provided by the XmlNode class. So all we need to do is to find the appropriate node with the SelectSingleNode function and call the function on that. Here is how the XML looks before do any deletion:

After the deletion the XML file becomes this:

Additional information

<%@ import namespace="System.Xml" %> <%@ page language="C#" debug="true"%> <script runat="server"> void page_load(object sender, System.EventArgs e){ // Create a new XmlDocument object XmlDocument xmlDoc = new XmlDocument(); // Load the XML file xmlDoc.Load(Server.MapPath("XmlDocumentWithRemoveChild.xml")); // Select only nodes where the ID = 1 XmlNode node = xmlDoc.SelectSingleNode("/CategoryList/Category[@ID='01'~"); // Get Parent node of the returned node XmlNode commonParent = node.ParentNode; if(node != null) { // Remove the current node commonParent.RemoveChild(node); } // Save the file again xmlDoc.Save(Server.MapPath("xmlDocumentWithRemoveChild.xml")); // Show the result to the user Response.Write(xmlDoc.OuterXml); } </script>