Mine

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.VisualBasic.Compatibility.VB6;
using System.IO;

namespace FList
{
    public partial class frmMain : Form
    {
        public string[] aMyArray;
        public string strWhat;

        public frmMain()
        {
            InitializeComponent();
        }

        private void frmMain_Load(object sender, EventArgs e)
        {
            this.changeDirPath(ref dirListBox1, ref driveListBox1);
            this.changeFilePath(ref dirListBox1, ref fileListBox1);
            lblDirCount.Text = "Directories: " + this.getCount(dirListBox1);
            lblFileCount.Text = "Files: " + this.getCount(fileListBox1);
            rdoAll_Click(sender, e);
            dirListBox1.ContextMenu = contextMenu1;
        }

        private void changeDirPath(ref DirListBox dirList, ref DriveListBox driveList)
        {
            dirList.Path = driveList.Drive + "\\";
        }

        private void changeFilePath(ref DirListBox dirList, ref FileListBox fileList)
        {
            fileList.Path = dirList.Path;
        }

        private string getCount(DirListBox dirList)
        {
            return (dirList.DirListCount.ToString());
        }

        private string getCount(FileListBox fileList)
        {
            return (fileList.Items.Count.ToString());
        }


        private void renameDir(ref DirListBox dirList, string strReplace, string strWith)
        {
            if (dirList.Items.Count > 0)
            {
                string dirName;
                foreach (object strItem in dirList.Items)
                {
                    dirName = strItem.ToString();
                    dirName = dirName.Replace(strReplace, strWhat);
                    MessageBox.Show(dirName);
                }
                //MessageBox.Show(dirList.Items[dirList.SelectedIndex].ToString());
            }
        }

        private string[] getContents(ref FileListBox fileList)
        {
            string[] strArray;
            strArray = new string[fileList.Items.Count];
            if (fileList.Items.Count > 0)
            {
                int i = 0;
                foreach (object strItem in fileList.Items)
                {
                    strArray[i] = strItem.ToString();
                    i++;
                }
            }
            return strArray;
        }

        private string[] getContents(ref DirListBox dirList)
        {
            string[] strArray;
            strArray = new string[dirList.Items.Count];
            if (dirList.Items.Count > 0)
            {
                int i = 0;
                foreach (object strItem in dirList.Items)
                {
                    strArray[i] = strItem.ToString();
                    i++;
                }
            }
            return strArray;
        }

        private string[] getContents(ref DirListBox dirList, ref FileListBox fileList)
        {
            string[] strDirs, strFiles, strAll;
            strDirs = getContents(ref dirList);
            strFiles = getContents(ref fileList);
            strAll = new string[strDirs.Length + strFiles.Length];
            int i = 0;
            if (strDirs.Length > 0)
            {
                foreach (string dir in strDirs)
                {
                    strAll[i] = dir;
                    i++;
                }
            }
            if (strFiles.Length > 0)
            {
                foreach (string file in strFiles)
                {
                    strAll[i] = file;
                    i++;
                }
            }
            return strAll;
        }

        private void copyToClipboard(string[] strData)
        {
            if (strData.Length > 0)
            {
                Clipboard.Clear();
                foreach (string strLine in strData)
                {
                    Clipboard.SetText(Clipboard.GetText() + strLine + "\r\n");
                }
            }
        }

        private void dirListBox1_DoubleClick(object sender, EventArgs e)
        {
            this.changeFilePath(ref dirListBox1, ref fileListBox1);
        }

        private void rdoFolders_Click(object sender, EventArgs e)
        {
            aMyArray = getContents(ref dirListBox1);
        }

        private void rdoAll_Click(object sender, EventArgs e)
        {
            aMyArray = getContents(ref dirListBox1, ref fileListBox1);
        }

        private void rdoFiles_Click(object sender, EventArgs e)
        {
            aMyArray = getContents(ref fileListBox1);
        }


        private void btnCopy_Click(object sender, EventArgs e)
        {
            if (rdoFiles.Checked)
            {
                rdoFiles_Click(sender, e);
            }
            else if (rdoFolders.Checked)
            {
                rdoFolders_Click(sender, e);
            }
            else
            {
                rdoAll_Click(sender, e);
            }
            copyToClipboard(aMyArray);
        }

        private void driveListBox1_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void ctxtRmUnder_Click(object sender, EventArgs e)
        {
            renameDir(ref dirListBox1, "_", " ");
        }
    }
}