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Type::HasElementTypeImpl Method
Visual Studio 2010
When overridden in a derived class, implements the HasElementType property and determines whether the current Type encompasses or refers to another type; that is, whether the current Type is an array, a pointer, or is passed by reference.
Assembly: mscorlib (in mscorlib.dll)
The following example defines the class MyTypeDelegator, which overrides the HasElementTypeImpl method. The main class checks for the HasElementType property and displays the element type.
using namespace System; using namespace System::Reflection; public ref class MyTypeDelegator: public TypeDelegator { public: String^ myElementType; private: Type^ myType; public: MyTypeDelegator( Type^ myType ) : TypeDelegator( myType ) { this->myType = myType; } protected: // Override Type::HasElementTypeImpl(). virtual bool HasElementTypeImpl() override { // Determine whether the type is an array. if ( myType->IsArray ) { myElementType = "array"; return true; } // Determine whether the type is a reference. if ( myType->IsByRef ) { myElementType = "reference"; return true; } // Determine whether the type is a pointer. if ( myType->IsPointer ) { myElementType = "pointer"; return true; } // Return false if the type is not a reference, array, or pointer type. return false; } }; int main() { try { int myInt = 0; array<Int32>^myArray = gcnew array<Int32>(5); MyTypeDelegator^ myType = gcnew MyTypeDelegator( myArray->GetType() ); // Determine whether myType is an array, pointer, reference type. Console::WriteLine( "\nDetermine whether a variable is an array, pointer, or reference type.\n" ); if ( myType->HasElementType ) Console::WriteLine( "The type of myArray is {0}.", myType->myElementType ); else Console::WriteLine( "myArray is not an array, pointer, or reference type." ); myType = gcnew MyTypeDelegator( myInt.GetType() ); // Determine whether myType is an array, pointer, reference type. if ( myType->HasElementType ) Console::WriteLine( "The type of myInt is {0}.", myType->myElementType ); else Console::WriteLine( "myInt is not an array, pointer, or reference type." ); } catch ( Exception^ e ) { Console::WriteLine( "Exception: {0}", e->Message ); } }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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