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 = TypeUtil.CreateInstanceRestricted <TypeConverter>(info.DeclaringType, attribConverter.ConverterTypeName);
}
else if (attribute is ConfigurationPropertyAttribute)
{
attribProperty = (ConfigurationPropertyAttribute)attribute;
}
else if (attribute is ConfigurationValidatorAttribute)
{
// There could be more then one validator attribute specified on a property
// Currently we consider this an error since it's too late to fix it for whidbey
// but the right thing to do is to introduce new validator type ( CompositeValidator ) that is a list of validators and executes
// them all
if (validator != null)
{
throw new ConfigurationErrorsException(SR.GetString(SR.Validator_multiple_validator_attributes, info.Name));
}
attribValidator = (ConfigurationValidatorAttribute)attribute;
attribValidator.SetDeclaringType(info.DeclaringType);
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;
}
}
