System.Configuration.ConfigurationProperty.ConfigurationProperty C# (CSharp) Метод

        internal ConfigurationProperty(PropertyInfo info) {
            Debug.Assert(info != null, "info != null");

            // Bellow are the attributes we handle
            TypeConverterAttribute attribConverter = null;
            ConfigurationPropertyAttribute attribProperty = null;
            ConfigurationValidatorAttribute attribValidator = null;

            // Compatability attributes
            // If the approprite data is provided in the ConfigPropAttribute then the one bellow will be ignored
            DescriptionAttribute attribStdDescription = null;
            DefaultValueAttribute attribStdDefault = null;

            TypeConverter typeConverter = null;
            ConfigurationValidatorBase validator = null;

            // Find the interesting attributes in the collection
            foreach (Attribute attribute in Attribute.GetCustomAttributes(info)) {
                if (attribute is TypeConverterAttribute) {
                    attribConverter = (TypeConverterAttribute)attribute;
                    typeConverter = (TypeConverter)TypeUtil.CreateInstanceWithReflectionPermission(attribConverter.ConverterTypeName);
                }
                else if (attribute is ConfigurationPropertyAttribute) {
                    attribProperty = (ConfigurationPropertyAttribute)attribute;
                }
                else if (attribute is ConfigurationValidatorAttribute) {

                    if (validator != null) {
                        throw new ConfigurationErrorsException(SR.GetString(SR.Validator_multiple_validator_attributes, info.Name));
                    }
                    
                    attribValidator = (ConfigurationValidatorAttribute)attribute;
                    validator = attribValidator.ValidatorInstance;
                }
                else if (attribute is DescriptionAttribute) {
                    attribStdDescription = (DescriptionAttribute)attribute;
                }
                else if (attribute is DefaultValueAttribute) {
                    attribStdDefault = (DefaultValueAttribute)attribute;
                }

            }

            Type propertyType = info.PropertyType;
            // Collections need some customization when the collection attribute is present
            if (typeof(ConfigurationElementCollection).IsAssignableFrom(propertyType)) {
                ConfigurationCollectionAttribute attribCollection =
                    Attribute.GetCustomAttribute(info,
                                                    typeof(ConfigurationCollectionAttribute)) as ConfigurationCollectionAttribute;

                // If none on the property - see if there is an attribute on the collection type itself
                if (attribCollection == null) {
                    attribCollection =
                        Attribute.GetCustomAttribute(propertyType,
                                                        typeof(ConfigurationCollectionAttribute)) as ConfigurationCollectionAttribute;
                }
                if (attribCollection != null) {
                    if (attribCollection.AddItemName.IndexOf(',') == -1) {
                        _addElementName = attribCollection.AddItemName;
                    }
                    _removeElementName = attribCollection.RemoveItemName;
                    _clearElementName = attribCollection.ClearItemsName;

                }

            }

            // This constructor shouldnt be invoked if the reflection info is not for an actual config property
            Debug.Assert(attribProperty != null, "attribProperty != null");

            ConstructorInit(attribProperty.Name,
                                info.PropertyType,
                                attribProperty.Options,
                                validator,
                                typeConverter);

            // Figure out the default value
            InitDefaultValueFromTypeInfo(attribProperty, attribStdDefault);

            // Get the description
            if ((attribStdDescription != null) && !string.IsNullOrEmpty(attribStdDescription.Description)) {
                _description = attribStdDescription.Description;
            }
        }