Part 2 : Reading Xml in C#.Net : XmlDocument

Namespace :  System.xml

Class name :XmlDocument()

Description 

This class implements the W3C Document Object Model (DOM) Level 1 Core and the Core DOM Level 2. The DOM is an in-memory (cache) tree representation of an XML document and enables the navigation and editing of this document. Because XmlDocument implements the IXPathNavigable interface it can also be used as the source document for the XslTransform class.

The XmlDataDocument class extends XmlDocument and allows structured data to be stored, retrieved, and manipulated through a relational DataSet. This class allows components to mix XML and relational views of the underlying data.

Coding :

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Xml;//Xml Class
using System.Windows.Forms;
using System.IO;

namespace Xml_Sample
{
    public partial class frmRead : Form
    {
        public frmRead()
        {
            InitializeComponent();
        }

        ///

        /// Load button
        ///

        ///

        ///
        private void toolStripButton1_Click(object sender, EventArgs e)
        {
            //open file dialog
            op.ShowDialog();
           
            //show the xml filepath in the textbox

            this.toolStripTextBox1.TextBox.Text = op.FileName;
           
            //load the xml file
            if (this.toolStripTextBox1.TextBox.Text != string.Empty)
                //read xml file
                Read_Xml(this.toolStripTextBox1.TextBox.Text.Trim());
            else
                MessageBox.Show("Select Xml file");
        }
       
        ///

        /// Method read the xml file
        ///

        ///
        public void Read_Xml(string filepath)
        {
            try
            {
                //crate new instance of class
                XmlDocument xdoc = new XmlDocument();
               
                //Loads xml file
                xdoc.Load(filepath);
              
                //format the xml to show in richtextbox
                string output=formatDocument(xdoc);
                                

                //Shows the xml
                this.richTextBox1.Text = output;


            }
            //If error Occured
            catch (Exception ex)
            {
                //Show error message
                MessageBox.Show(ex.Message, "Status|Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
       
        }

        ///

        /// Format the xml to shown in the proper indentation format
        ///

        /// Xml document
        /// formatatted string
        private string formatDocument(XmlDocument xdoc)
        {
            StringBuilder sb = new StringBuilder();
            StringWriter sw = new StringWriter(sb);
            XmlTextWriter xtxtWriter = new XmlTextWriter(sw);
            xtxtWriter.Formatting = Formatting.Indented;
            xdoc.WriteTo(xtxtWriter);
            return(sb.ToString());
        }

      
    }
}


Xml_Sample.rar