Delete All XML Elements and Attributes Nodes

Introduction

Today, in this article let's play around with one of the interesting and most useful concepts in XML in C#.

Question: What is deleting all XML Element/Attributes nodes?

In simple terms "It provides flexibility to delete all elements and attributes from XML and save the changes to the XML document."

Step 1: Create a new "ASP.NET Web Application", as in:

Step 2: The complete code of Employee.xml looks like this:

<?xml version="1.0" encoding="utf-8"?>

<FirstName>Vijay</FirstName>

<LastName>Prativadi</LastName>

</Employee>

<FirstName>Sandeep</FirstName>

<LastName>Reddy</LastName>

</Employee>

</Employees>

Step 3: The complete code of webform1.aspx looks like this:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="DeleteAllElementAttributesXMLApp._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

<table>

<tr>

<asp:Label ID="Label1" runat="server" Text="Delete All XML Elements/Attribute Nodes"

Font-Bold="true" Font-Size="Large" Font-Names="Verdana" ForeColor="Maroon"></asp:Label>

</td>

</tr>

<tr>

<asp:Button ID="Button1" runat="server" Text="Delete Nodes" Font-Names="Verdana"

Width="213px" BackColor="Orange" Font-Bold="True" OnClick="Button1_Click" />

</td>

</tr>

<tr>

<asp:Label ID="Label5" runat="server" Font-Bold="true" Font-Names="Verdana"></asp:Label>

</td>

</tr>

</table>

</div>

</center>

</form>

</body>

</html>

Step 4: The complete code of webform1.aspx.cs looks like this:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Xml;

namespace DeleteAllElementAttributesXMLApp

{

public partial class _Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

XmlDocument document = new XmlDocument();

document.Load(Server.MapPath("Employee.xml"));

XmlNode objXNode = document.DocumentElement;

objXNode.RemoveAll();

document.Save(Server.MapPath("Employee.xml"));

Label5.Text = "XML Elements/Attributes Deleted Successfully";

Label5.ForeColor = System.Drawing.Color.Green;

}

Step 5: The output of the application looks like this:

Step 6: The data deleted output of the application looks like this:

Step 7: The complete code of Employee.xml looks like this:

<?xml version="1.0" encoding="utf-8"?>

</Employees>

I hope this article is useful for you.