Write values in app.config file

Question

can anyone please help me how can I set/store values in the app.config file using c#, is it possible at all?

Answer 1

For a .NET 4.0 console application, none of these worked for me. So I used the following below and it worked:

private static void UpdateSetting(string key, string value)
{
    Configuration configuration = ConfigurationManager.
        OpenExeConfiguration(Assembly.GetExecutingAssembly().Location);
    configuration.AppSettings.Settings[key].Value = value;
    configuration.Save();

    ConfigurationManager.RefreshSection("appSettings");
}