Microsoft Certified Solutions Developer (MCSD) Certification Practice Test

What method can be called to find out the parameters of a constructor in Reflection?

1. GetParameters

2. GetConstructorParameters

3. FetchParameters

4. RetrieveParameters

The correct answer is: GetParameters

Using the GetParameters method is the correct choice for retrieving the parameters of a constructor in Reflection. In .NET, the Reflection namespace provides the ability to inspect the metadata of types, which includes details about constructors, methods, properties, and fields. When you want to inspect a specific constructor of a class, you first obtain a ConstructorInfo object that represents that constructor. Once you have this object, you can call the GetParameters method on it. This method returns an array of ParameterInfo objects, where each ParameterInfo object provides information about a specific parameter, such as its name, type, default value, and whether it is optional. This mechanism allows developers to dynamically inspect and interact with types and their members at runtime, which is particularly useful in scenarios like dependency injection, serialization, or when building frameworks that need to manipulate objects and classes dynamically. The other options, such as GetConstructorParameters, FetchParameters, and RetrieveParameters, do not correspond to existing methods in the Reflection API. Therefore, they would not successfully provide parameter information for constructors.