TBMM/GCMM/SettingsForm.cs

using GCMM.Properties;
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.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace GCMM
{
    public partial class SettingsForm : Form
    {
        private MainForm mainForm;
        private bool autopatchingEnabled;
        public SettingsForm()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            gamelocation.Text = Settings.Default.GamePath;
            useProxy.Checked = Settings.Default.UseProxy;
            mainForm = Owner as MainForm;
            autopatchingEnabled = Settings.Default.SteamUserID != 0 && mainForm.UpdateOrGetSteamConfigToAutoStart(null);
            autopatching.Checked = autopatchingEnabled;
        }

        private void browsebtn_Click(object sender, EventArgs e)
        {
            gamelocation.Text = mainForm.SelectGameFolder() ?? gamelocation.Text;
        }

        private void savebtn_Click(object sender, EventArgs e)
        {
            Settings.Default.GamePath = gamelocation.Text;
            Settings.Default.UseProxy = useProxy.Checked;
            if (autopatching.Checked != autopatchingEnabled)
            {
                if (autopatching.Checked && Settings.Default.SteamUserID == 0)
                {
                    var (steamPath, user) = mainForm.GetSteamLocationAndUser();
                    if (user != 0)
                        mainForm.DetectConfigLocationAndAutoStart(steamPath, ref user);
                    Settings.Default.SteamUserID = user; //If it's 0 then it's no change
                }
                else
                    mainForm.UpdateOrGetSteamConfigToAutoStart(autopatching.Checked);
            }
            Settings.Default.Save();
            Close();
        }

        private void cancelbtn_Click(object sender, EventArgs e)
        {
            Close();
        }
    }
}