Airplane Manager

using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace FSXAirplaneManager
{
    public partial class ManagerWindow : Form
    {
        public ManagerWindow()
        {
            InitializeComponent();
            String fsxLocation = (String)Registry.GetValue("HKEY_CURRENT_USER\\Software\\Microsoft\\Microsoft Games\\Flight Simulator\\10.0", "AppPath", "Error");
            if (fsxLocation == "Error")
            {
                System.Environment.Exit(1);
            }
            DirectoryInfo di = new DirectoryInfo(fsxLocation + "\\SimObjects\\Airplanes\\");
            foreach (DirectoryInfo d in di.GetDirectories("*", SearchOption.TopDirectoryOnly))
            {
                folders.Add(d);
            }
            PlaneList.DataSource = folders;
        }
        static List<DirectoryInfo> folders = new List<DirectoryInfo>();

        private void PlaneList_SelectedIndexChanged(object sender, EventArgs e)
        {
            String fsxLocation = (String)Registry.GetValue("HKEY_CURRENT_USER\\Software\\Microsoft\\Microsoft Games\\Flight Simulator\\10.0", "AppPath", "Error") + "SimObjects\\Airplanes\\";
            String selectedItem = PlaneList.SelectedItem.ToString();
            //String[] texturesFolders;
            //texturesFolders = Directory.GetDirectories(fsxLocation + selectedItem + "\\", "texture.*");
            //AirplaneThumbnail.ImageLocation = texturesFolders[1] + "\\thumbnail.jpg";
            SelectedPlaneLabel.Text = "Selected Plane: " + selectedItem;
            if(File.Exists(fsxLocation + "\\" + selectedItem + "\\aircraft.cfg"))
            {
                PlaneStatusLabel.Text = "Plane Status: Enabled";
                EnableButton.Text = "Disable";
            }
            else
            {
                if(File.Exists(fsxLocation + "\\" + selectedItem + "\\aircraft.cfg.disabled"))
                {
                    PlaneStatusLabel.Text = "Plane Status: Disabled";
                    EnableButton.Text = "Enable";
                }
                else
                {
                    PlaneStatusLabel.Text = "Plane Status: Does Not Exist";
                    EnableButton.Text = "N/A";
                }
            }
        }

        private void EnableButton_Click(object sender, EventArgs e)
        {
            if(EnableButton.Text == "Enable")
            {
                String fsxLocation = (String)Registry.GetValue("HKEY_CURRENT_USER\\Software\\Microsoft\\Microsoft Games\\Flight Simulator\\10.0", "AppPath", "Error") + "SimObjects\\Airplanes\\";
                String selectedItem = PlaneList.SelectedItem.ToString();
                File.Move(fsxLocation + "\\" + selectedItem + "\\aircraft.cfg.disabled", fsxLocation + "\\" + selectedItem + "\\aircraft.cfg");
                EnableButton.Text = "Disable";
                PlaneStatusLabel.Text = "Plane Status: Enabled";
            }
            else
            {
                if(EnableButton.Text == "Disable")
                {
                    String fsxLocation = (String)Registry.GetValue("HKEY_CURRENT_USER\\Software\\Microsoft\\Microsoft Games\\Flight Simulator\\10.0", "AppPath", "Error") + "SimObjects\\Airplanes\\";
                    String selectedItem = PlaneList.SelectedItem.ToString();
                    File.Move(fsxLocation + "\\" + selectedItem + "\\aircraft.cfg", fsxLocation + "\\" + selectedItem + "\\aircraft.cfg.disabled");
                    EnableButton.Text = "Enable";
                    PlaneStatusLabel.Text = "Plane Status: Disabled";
                }
                else
                {

                }
            }
        }

        private void ExitButton_Click(object sender, EventArgs e)
        {
            System.Environment.Exit(0);
        }
    }
}