System.Configuration.ConfigurationElement.CachePerTypeValidator C# (CSharp) Метод

        private static void CachePerTypeValidator( Type type, ConfigurationValidatorBase validator ) {
            Debug.Assert((type != null) && ( validator != null));
            Debug.Assert(typeof(ConfigurationElement).IsAssignableFrom(type));

            // Use the same lock as the property bag lock since in the current implementation
            // the only way to get to this method is through the code path that locks the property bag cache first ( see PropertiesFromType() )

            // NOTE[ Thread Safety ]: Non-guarded access to static variable - since this code is called only from CreatePropertyBagFromType
            // which in turn is done onle once per type and is guarded by the s_propertyBag.SyncRoot then this call is thread safe as well
            if (s_perTypeValidators == null ) {
                    s_perTypeValidators = new Dictionary<Type,ConfigurationValidatorBase>();
            }

            // A type validator should be cached only once. If it isn't then attribute parsing is done more then once which should be avoided
            Debug.Assert( !s_perTypeValidators.ContainsKey(type));

            // Make sure the supplied validator supports validating this object
            if (!validator.CanValidate(type)) {
                throw new ConfigurationErrorsException(SR.GetString(SR.Validator_does_not_support_elem_type, 
                                                       type.Name));
            }

            s_perTypeValidators.Add(type, validator);
        }