Window Tabifier

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;

namespace WindowTabifier
{
    public partial class WindowList : Form
    {
        List<window> windows = new List<window>();

        private List<window> selected;

        public List<window> SelectedWindows
        {
            get { return selected; }
            set { selected = value; }
        }

        public WindowList()
        {
            InitializeComponent();
        }
        
        #region EventHandlers

        private void filterBox_TextChanged(object sender, EventArgs e)
        {
            Display(filterBox.Text);
        }

        private void WindowList_Load(object sender, EventArgs e)
        {
            GetWindows();
            Display("");
        }

        private void OKButton_Click(object sender, EventArgs e)
        {
            int count = List.CheckedIndices.Count;

            List<window> copy = windows.FindAll(delegate(window wnd) { return wnd.Title.Contains(filterBox.Text); });
            selected = new List<window>(count);

            for (int i = 0; i < count; i++)
            {
                selected.Add(copy[List.CheckedIndices[i]]);
            }
        }

        private void refreshToolStripButton_Click(object sender, EventArgs e)
        {
            GetWindows();
            Display(filterBox.Text);
        }

        private void CheckAllToolStripButton_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < List.Items.Count; i++)
            {
                List.SetItemChecked(i, true);
            }
        }

        private void ClearallToolStripButton_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < List.Items.Count; i++)
            {
                List.SetItemChecked(i, false);
            }
        }

        #endregion

        private void GetWindows()
        {
            if (Properties.Settings.Default.Ignore)
            {
                windows = window.GetOpenWindows().FindAll((window wnd)=>wnd.Title.Length>0 && wnd.GetExecutablePath()!=Application.ExecutablePath);
            }
            else
            {
                windows = window.GetOpenWindows().FindAll((window wnd) => wnd.GetExecutablePath() != Application.ExecutablePath);
            }
        }

        private void Display(string filter)
        {
            List.Items.Clear();

            List<window> copy = windows.FindAll(delegate(window wnd) { return wnd.Title.Contains(filter); });

            foreach (window wnd in copy)
            {
                List.Items.Add(wnd.Title);
            }
        }
    }
}