/// <summary>
/// Get the value serializer declared for the given type.
/// </summary>
/// <param name="type">The value type to serialize</param>
/// <returns>The value serializer associated with the given type</returns>
public static ValueSerializer GetSerializerFor(Type type)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
object value = _valueSerializers[type];
if (value != null)
{
// This uses _valueSerializersLock's instance as a sentinal for null (as opposed to not attempted yet).
return(value == _valueSerializersLock ? null : value as ValueSerializer);
}
AttributeCollection attributes = TypeDescriptor.GetAttributes(type);
ValueSerializerAttribute attribute = attributes[typeof(ValueSerializerAttribute)] as ValueSerializerAttribute;
ValueSerializer result = null;
if (attribute != null)
{
result = (ValueSerializer)Activator.CreateInstance(attribute.ValueSerializerType);
}
if (result == null)
{
if (type == typeof(string))
{
result = new StringValueSerializer();
}
else
{
// Try to use the type converter
TypeConverter converter = TypeConverterHelper.GetTypeConverter(type);
// DateTime is a special-case. We can't use the DateTimeConverter, because it doesn't
// support anything other than user culture and invariant culture, and we need to specify
// en-us culture.
if (converter.GetType() == typeof(DateTimeConverter2))
{
result = new DateTimeValueSerializer();
}
else if (converter.CanConvertTo(typeof(string)) && converter.CanConvertFrom(typeof(string)) &&
!(converter is ReferenceConverter))
{
result = new TypeConverterValueSerializer(converter);
}
}
}
lock (_valueSerializersLock)
{
// This uses _valueSerializersLock's instance as a sentinal for null (as opposed to not attempted yet).
_valueSerializers[type] = result == null ? _valueSerializersLock : result;
}
return(result);
}
/// <summary>Gets the <see cref="T:System.Windows.Markup.ValueSerializer" /> declared for the specified type.</summary>
/// <returns>The serializer associated with the specified type. May return null.</returns>
/// <param name="type">The type to get the <see cref="T:System.Windows.Markup.ValueSerializer" /> for.</param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="type" /> is null.</exception>
public static ValueSerializer GetSerializerFor(Type type)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
object obj = _valueSerializers[type];
if (obj != null)
{
if (obj != _valueSerializersLock)
{
return(obj as ValueSerializer);
}
return(null);
}
AttributeCollection attributes = TypeDescriptor.GetAttributes(type);
ValueSerializerAttribute valueSerializerAttribute = attributes[typeof(ValueSerializerAttribute)] as ValueSerializerAttribute;
ValueSerializer valueSerializer = null;
if (valueSerializerAttribute != null)
{
valueSerializer = (ValueSerializer)Activator.CreateInstance(valueSerializerAttribute.ValueSerializerType);
}
if (valueSerializer == null)
{
if (type == typeof(string))
{
valueSerializer = new StringValueSerializer();
}
else
{
TypeConverter typeConverter = TypeConverterHelper.GetTypeConverter(type);
if (typeConverter.GetType() == typeof(DateTimeConverter2))
{
valueSerializer = new DateTimeValueSerializer();
}
else if (typeConverter.CanConvertTo(typeof(string)) && typeConverter.CanConvertFrom(typeof(string)) && !(typeConverter is ReferenceConverter))
{
valueSerializer = new TypeConverterValueSerializer(typeConverter);
}
}
}
lock (_valueSerializersLock) {
_valueSerializers[type] = ((valueSerializer == null) ? _valueSerializersLock : valueSerializer);
return(valueSerializer);
}
}