Encrypt connection strings in .config file

public static class EncryptConnection
{
    public static void EncryptConnectionString(bool encrypt)
    {
        Configuration configFile = null;
        try
        {
            // Open the configuration file and retrieve the connectionStrings section.
            configFile = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            ConnectionStringsSection configSection = configFile.GetSection("connectionStrings") as ConnectionStringsSection;

            if ((!(configSection.ElementInformation.IsLocked)) && (!(configSection.SectionInformation.IsLocked)))
            {
                if (encrypt && !configSection.SectionInformation.IsProtected)//encrypt is false to unencrypt
                {
                    configSection.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
                }

                if (!encrypt && configSection.SectionInformation.IsProtected)//encrypt is true so encrypt
                {
                    configSection.SectionInformation.UnprotectSection();
                }

                //re-save the configuration file section
                configSection.SectionInformation.ForceSave = true;

                // Save the current configuration.
                configFile.Save();
            }
        }
        catch (System.Exception ex)
        {
            throw (ex);
        }
        finally
        {
        }
    }
}