Easy Desktop Web Stats

using System;
using System.Windows.Forms;
using System.Collections.Generic;

using MessageManager;

namespace Desktop_Web_Stats
{
    public partial class Preferences : Form
    {
        private Properties.Settings settings = Properties.Settings.Default;
      
        private List<string> changePool; 
        
        public Preferences()
        {
            InitializeComponent();
        }

        private void ok_Btn_Click(object sender, EventArgs e)
        {
            this.Visible = false;
            if (changePool.Contains("True"))
            {               
                settings.updateInterval = (short)updateInterval_UpDn.Value;
                settings.autoStart = autoStart_ckBox.Checked;
                settings.playDing = playDing_ckBox.Checked;

                Main.preferencesChanged = true;

                try
                {
                    settings.Save();
                    Main.preferencesChanged = true;                   
                    Dialog.Message("Success", "Your new preferences were saved", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                catch
                {
                    Dialog.Message("Error", "An error occurred\nTry again to change your preferences", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
            }
            else
            {                
                Main.preferencesChanged = false; 
                Dialog.Message("Cancelled", "No changes were made", MessageBoxButtons.OK, MessageBoxIcon.Information);                              
            }
        }

        private void Preferences_Load(object sender, EventArgs e)
        {
            changePool = new List<string>() { "False", "False", "False" };              

            updateInterval_UpDn.Value = settings.updateInterval;
            autoStart_ckBox.Checked = settings.autoStart;
            playDing_ckBox.Checked = settings.playDing;           
        }

        private void Preferences_FormClosed(object sender, FormClosedEventArgs e)
        {
            Dispose(true);
        }

        private void updateInterval_UpDn_Click(object sender, EventArgs e)
        {
           changePool[0] = (short)updateInterval_UpDn.Value != (short)settings["updateInterval"] ? "True" : "False";            
        }

        private void autoStart_ckBox_Click(object sender, EventArgs e)
        {
            changePool[1] = autoStart_ckBox.Checked != (bool)settings["autoStart"] ? "True" : "False";            
        }

        private void playDing_ckBox_Click(object sender, EventArgs e)
        {
            changePool[2] = playDing_ckBox.Checked != (bool)settings["playDing"] ? "True" : "False";           
        }       
    }
}