System.Configuration.ProtectedConfiguration.InstantiateProviders C# (CSharp) Method

        private static void InstantiateProviders()
        {
            if (_Providers != null)
                return;

            lock (_Lock)
            {
                if (_Providers != null)
                    return;

                ProtectedConfigurationProviderCollection providers = new ProtectedConfigurationProviderCollection();
                ProtectedConfigurationSection config = PrivilegedConfigurationManager.GetSection(BaseConfigurationRecord.RESERVED_SECTION_PROTECTED_CONFIGURATION) as ProtectedConfigurationSection;

                if (config != null)
                {
                    foreach (DictionaryEntry de in config.ProviderNodes)
                    {
                        ProviderNode pn = de.Value as ProviderNode;

                        if (pn == null)
                            continue;

                        providers.Add(pn.Provider);
                    }
                }

                _Providers = providers;
            }
        }
        private static object _Lock = new object();