BrowserSelect.frm_settings.frm_settings_Load C# (CSharp) Метод

        private void frm_settings_Load(object sender, EventArgs e)
        {
            //check if browser select is the default browser or not
            //to disable/enable "set Browser select as default" button
            using (RegistryKey key = Registry.CurrentUser.OpenSubKey(
                    @"Software\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice"))
            {
                var default_browser = key?.GetValue("ProgId");

                //disable the set default if already default
                if (default_browser != null && (string)default_browser == "bselectURL")
                    btn_setdefault.Enabled = false;
            }

            //populate list of browsers for Rule List ComboBox
            var browsers = BrowserFinder.find();
            var c = ((DataGridViewComboBoxColumn)gv_filters.Columns["browser"]);

            foreach (Browser b in browsers)
            {
                browser_filter.Items.Add(b, !Settings.Default.HideBrowsers.Contains(b.exec));
                c.Items.Add(b.ToString());
            }
            // add browser select to the list
            c.Items.Add("display BrowserSelect");

            //populate Rules in the gridview
            foreach (var rule in Settings.Default.AutoBrowser)
                rules.Add(rule);
            var bs = new BindingSource();
            bs.DataSource = rules;
            gv_filters.DataSource = bs;

            chk_check_update.Checked = Settings.Default.check_update != "nope";
        }