Change connection string & reload app.config at run time

Question

When I change the connection string using this code, it does not reload app.config at runtime. I expected it to reload similarly to how we reload app.conf

Answer 1

Here's the method I use:

public void AddOrUpdateAppConnectionStrings(string key, string value)
{
    try
    {
        var configFile = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        var settings = configFile.ConnectionStrings.ConnectionStrings;
        if (settings[key] == null)
        {
            settings.Add(new ConnectionStringSettings(key,value));
        }
        else
        {
            settings[key].ConnectionString = value;
        }
        configFile.Save(ConfigurationSaveMode.Modified);
        ConfigurationManager.RefreshSection(configFile.ConnectionStrings.SectionInformation.Name);
        Properties.Settings.Default.Reload();
    }
    catch (ConfigurationErrorsException)
    {
        Console.WriteLine("Error writing app settings");
    }
}