![]() GenericParameterAttributes sConstraints = GenericParameterAttributes::SpecialConstraintMask The property also includes values that represent variance, which you can mask off as shown in the following code. Use the GenericParameterAttributes property to discover the special constraints on a type parameter, such as requiring that it be a reference type. Console::WriteLine(" Is this a generic type? ", _Ĭonsole.WriteLine(" Base type constraint: None") Use the IsGenericType property to determine whether the type is generic, and use the IsGenericTypeDefinition property to determine whether the type is a generic type definition. Type^ d1 = Dictionary::typeid ĭim d1 As Type = GetType(Dictionary(Of ,)) Note that in the rest of this procedure, the type is contained in a method parameter named t. See the Type class topic for other ways to get a Type object. In the following code, the type is obtained using the C# typeof operator ( GetType in Visual Basic, typeid in Visual C++). Get an instance of Type that represents the generic type. To examine a generic type and its type parameters You can create a Type object that represents a constructed type by binding type arguments to the type parameters of a generic type definition. The first procedure in this section examines generic types. The principle difference is that a generic type has a list of Type objects representing its generic type parameters. This is a simple example: Get the list from the public method of a class, including the inheritance method from the superclass and the interface.Information about generic types is obtained in the same way as information about other types: by examining a Type object that represents the generic type. Let us first take a look at the dynamic loading and instantiation of classes using a simple example. It is also the key to the functionality of the Reflection API. The class Class provides methods for querying properties of the class and allows classes to be loaded dynamically and instances to be generated dynamically. For each class that the runtime system uses, a class object of the Class type is created during the loading process. ![]() With the getClass method of the Object class, any object can deliver a suitable class object. The Object class is the parent class of all other classes and ensures that some elementary methods such as equals, toString, clone or hashCode are available in all classes.
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