Microsoft Certified Solutions Developer (MCSD) Certification Practice Test

Which flag option is NOT part of the AttributeTargets available?

1. Event

2. Constructor

3. Message

4. Struct

The correct answer is: Message

The AttributeTargets enumeration in .NET specifies the types of program entities to which an attribute can be applied. Each flag within this enumeration defines a specific context in which an attribute can be used. For instance, flags such as Event, Constructor, and Struct are indeed part of AttributeTargets. This means you can apply custom attributes on these program elements to enhance their metadata with additional information. In contrast, the option referring to Message is not a valid target in the context of attribute usage. There is no specific attribute target denoted as Message within the AttributeTargets enumeration, making it the correct distinction for this question. Understanding the specific flag options available within the AttributeTargets is crucial when working with custom attributes in .NET, as selecting the right target ensures that attributes are applied appropriately and function as intended within your code architecture.