how to generate a checkbox list files and files in subfolder

Question

I’ve generated winform which will display a list of files in a folder and checked items generate xml file. Now, I wanted to generate a list of files and files in subfolder which should be listed in checkbox list whatever the files I checked will get generate a xml file with file path(as parent) and file name (child) separated as parent and child node, and un checked files also should generate xml file as separate node. Will u please modify my code below:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Xml;
namespace GetDetails
{
public partial class Form1 : Form
{
//List listfiles = new List();
public Form1()
{
InitializeComponent();
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
//string path;
//path = FolderBrowserDialog.Equals("");
//textBox1.Text = FolderBrowserDialog.SelectedPath;
////path = folderBrowserDialog1.SelectedPath;
//// folderBrowserDialog1.ShowDialog(); // NOT SURE ABOUT USING THIS!
//textBox1.Text = path;
}
private void button4_Click(object sender, EventArgs e)
{
// Create a new instance of FolderBrowserDialog.
FolderBrowserDialog folderBrowserDlg = new FolderBrowserDialog();
// A new folder button will display in FolderBrowserDialog.
folderBrowserDlg.ShowNewFolderButton = true;
//Show FolderBrowserDialog
DialogResult dlgResult = folderBrowserDlg.ShowDialog();
if (dlgResult.Equals(DialogResult.OK))
{
//Show selected folder path in textbox1.
textBox1.Text = folderBrowserDlg.SelectedPath;
//Browsing start from root folder.
Environment.SpecialFolder rootFolder = folderBrowserDlg.RootFolder;
}
}
private void button1_Click(object sender, EventArgs e)
{
FolderBrowserDialog fbd = new FolderBrowserDialog();
if (fbd.ShowDialog() == DialogResult.OK)
{
if (!textBox1.Text.Equals(String.Empty))
{
if (System.IO.Directory.GetFiles(textBox1.Text).Length > 0)
{
foreach (string file in System.IO.Directory.GetFiles(textBox1.Text))
{
//Add file in ListBox.
checkedListBox1.Items.Add(Path.GetFileName(file));
}
}
else
{
checkedListBox1.Items.Add(String.Format("No files Found at location: { 0}", textBox1.Text));
}
}
/*
FolderBrowserDialog fbd = new FolderBrowserDialog();
if(fbd.ShowDialog() == DialogResult.OK)
{
checkedListBox1.Items.Clear();
string[] files = Directory.GetFiles(fbd.SelectedPath);
string[] dirs = Directory.GetDirectories(fbd.SelectedPath);
foreach(string file in files)
{
checkedListBox1.Items.Add(Path.GetFileName(file));
}
foreach (string dir in dirs)
{
checkedListBox1.Items.Add(Path.GetFileName(dir));
}
}*/
}
}
private void checkedListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
string str = " ";
int i;
for (i = 0; i < checkedListBox1.Items.Count; i++)
{
if (checkedListBox1.GetItemChecked(i))
{
str = (string)checkedListBox1.Items[i];
MessageBox.Show(str);
//xwriter.WriteElementString("SelectedItem", checkedListBox1.Items[i].ToString());
}
}
//System.IO.File.WriteAllText("GetDetails.xml", str);
XmlTextWriter xwriter = new XmlTextWriter("GetDetails.xml", Encoding.Unicode);
xwriter.WriteStartDocument();
xwriter.WriteStartElement("XMLFILE");
xwriter.WriteStartElement("file");
xwriter.WriteString(textBox1.Text);
xwriter.WriteEndElement();
foreach (var item in checkedListBox1.CheckedItems)
{
xwriter.WriteStartElement("IncludedItems");
xwriter.WriteString(item.ToString());
xwriter.WriteEndElement();
}
xwriter.WriteEndElement();
xwriter.WriteEndDocument();
xwriter.Close();
}
private void button3_Click(object sender, EventArgs e)
{
this.Close();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button5_Click(object sender, EventArgs e)
{
this.Close();
}
}
}