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Append XML Data With Append Method

By Vijay Prativadi on October 17, 2012
Today, in this article let’s play around with one of the interesting and most useful concepts in XML in C#.
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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 appending XML data with the append method?

In simple terms "It provides flexibility to append XML data and save the changes to the XML document.".

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

Output1.jpg
 

Step 2: Add a new XML file item to the project and name it Employee.xml.

 

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

 

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

 

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

<html xmlns="http://www.w3.org/1999/xhtml">

<head id="Head1" runat="server">

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

    <center>

        <div>

            <table>

                <tr>

                    <td colspan="2" align="center">

                        <asp:Label ID="Label1" runat="server" Text="Append XML Data with Append Method" Font-Bold="true"

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

                    </td>

                </tr>

                <tr>

                    <td>

                        <asp:Label ID="Label6" runat="server" Text="Please Enter Id" Font-Size="Large" Font-Names="Verdana"

                            Font-Italic="true"></asp:Label>

                    </td>

                    <td>

                        <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>

                    </td>

                </tr>

                <tr>

                    <td>

                        <asp:Label ID="Label2" runat="server" Text="Please Enter FirstName" Font-Size="Large"

                            Font-Names="Verdana" Font-Italic="true"></asp:Label>

                    </td>

                    <td>

                        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

                    </td>

                </tr>

                <tr>

                    <td>

                        <asp:Label ID="Label3" runat="server" Text="Please Enter LastName" Font-Size="Large"

                            Font-Names="Verdana" Font-Italic="true"></asp:Label>

                    </td>

                    <td>

                        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

                    </td>

                </tr>

                <tr>

                    <td>

                        <asp:Label ID="Label4" runat="server" Text="Please Enter Age" Font-Size="Large" Font-Names="Verdana"

                            Font-Italic="true"></asp:Label>

                    </td>

                    <td>

                        <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>

                    </td>

                </tr>

                <tr>

                    <td colspan="2" align="center">

                        <asp:Button ID="Button1" runat="server" Text="Append Data" Font-Names="Verdana" Width="213px"

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

                    </td>

                </tr>

                <tr>

                    <td colspan="2" align="center">

                        <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 AppendXMLDataApp

{

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

    {

        protected void Page_Load(object sender, EventArgs e)

        {

        }

        protected void Button1_Click(object sender, EventArgs e)

        {

            if (string.IsNullOrEmpty(TextBox4.Text) || string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text) || string.IsNullOrEmpty(TextBox3.Text))

            {

                Label5.Text = "Please Enter Some Values";

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

            }

            else

            {

                XmlDocument doc = new XmlDocument();

                XmlNode rootNode = doc.CreateXmlDeclaration("1.0", "UTF-8", null);

                doc.AppendChild(rootNode);

                XmlNode employeesNode = doc.CreateElement("Employees");

                doc.AppendChild(employeesNode);

                XmlNode employeeNode = doc.CreateElement("Employee");

                employeesNode.AppendChild(employeeNode);

                XmlNode idNode = doc.CreateElement("Id");

                idNode.InnerText = TextBox4.Text;

                employeeNode.AppendChild(idNode);

                XmlNode firstNameNode = doc.CreateElement("FirstName");

                firstNameNode.InnerText = TextBox1.Text;

                employeeNode.AppendChild(firstNameNode);

                XmlNode lastNameNode = doc.CreateElement("LastName");

                lastNameNode.InnerText = TextBox2.Text;

                employeeNode.AppendChild(lastNameNode);

                XmlNode ageNode = doc.CreateElement("Age");

                ageNode.InnerText = TextBox3.Text;

                employeeNode.AppendChild(ageNode);

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

                Label5.Text = "Data Appended Successfully";

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

                TextBox4.Text = string.Empty;

                TextBox1.Text = string.Empty;

                TextBox2.Text = string.Empty;

                TextBox3.Text = string.Empty;

            }

        }

    }

}

 

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

 

append-xml-data.png
 

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

data-append-xml.png
 

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

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

<Employees>

  <Employee>

    <Id>1</Id>

    <FirstName>Vijay</FirstName>

    <LastName>Prativadi</LastName>

    <Age>26</Age>

  </Employee>

</Employees>


I hope this article is useful for you.

Vijay Prativadi

Hey Everyone, It's Vijay. I am SDE mostly up on Microsoft Technologies. If you are thinking to know what I do mostly when at work. I get a chance to work upon few Microsoft technologies. All the way along my core tech... Read more

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