OptionalAttribute Class
Marks a constructor parameter to be bound to an XML element that occurs once or not at all.
C#
[AttributeUsage(System.AttributeTargets.Parameter, Inherited = false, AllowMultiple = false)]
public sealed class OptionalAttribute : Attribute- Inheritance
- Attributes
Remarks
If the Oxbinder<T> finds the XML child element, it creates the object bound to the element, and then populates the annotated parameter with the object.
This annotation must mark a constructor parameter. The class containing this constructor must be annotated with ForElementAttribute.
The parameter must be of type T? or BindResult<T>?, where T is a class
annotated with ForElementAttribute. If no matching child
element is found, null is provided.
After a parameter with OptionalAttribute, you cannot specify another parameter for the same element name with RequiredAttribute or MultipleAttribute.
Properties
Methods
| Equals(object) | (Inherited from Attribute) |
| GetHashCode() | (Inherited from Attribute) |
| IsDefaultAttribute() | (Inherited from Attribute) |
| Match(object) | (Inherited from Attribute) |
| GetType() | (Inherited from object) |
| MemberwiseClone() | (Inherited from object) |
| ToString() | (Inherited from object) |