Create new settings on runtime and read after restart

Question

I would like to store usersettings. They are created at runtime and should be read after restarting the application.

private void MainForm_FormClosing(object         


        

Answer 1

Probably a bit late for you but for others there are 2 parts.

1. Saving the new UserSetting
2. Reloading from userConfig.xml at startup

I created this extension for ApplicationSettingsBase based on other answers

public static void Add<T>(this ApplicationSettingsBase settings, string propertyName, T val)
{           
    var p = new SettingsProperty(propertyName)
    {
        PropertyType = typeof(T),
        Provider = settings.Providers["LocalFileSettingsProvider"],
        SerializeAs = SettingsSerializeAs.Xml
    };

    p.Attributes.Add(typeof(UserScopedSettingAttribute), new UserScopedSettingAttribute());

    settings.Properties.Add(p);
    settings.Reload();

    //finally set value with new value if none was loaded from userConfig.xml
    var item = settings[propertyName];
    if (item == null)
    {
        settings[propertyName] = val;
        settings.Save();
    }
}

This will make Settings["MyKey"] work, but when you restart the setting will not be loaded, but the userConfig.xml has the new value (if you called Settings.Save())

The trick to get it to reload is to execute Add again e.g

if (settings.Properties.Cast<SettingsProperty>().All(s => s.Name != propertyName))
{
    settings.Add("MyKey", 0);
};

The way Add works is that it will only set MyKey to 0 if no value is loaded from userConfig.xml