EventInfo::EventHandlerType Property
Gets the Type object of the underlying event-handler delegate associated with this event.
Assembly: mscorlib (in mscorlib.dll)
Implements
_EventInfo::EventHandlerType| Exception | Condition |
|---|---|
| SecurityException | The caller does not have the required permission. |
The following example uses the EventHandlerType property to discover the delegate type of an event and to display its parameter types.
The example defines a delegate named MyDelegate and an event named ev of type MyDelegate. The code in the Main method discovers the event signature by getting the delegate type of the event, getting the Invoke method of the delegate type, and then retrieving and displaying the parameters.
// The following example uses instances of classes in // the System::Reflection namespace to discover an event argument type. using namespace System; using namespace System::Reflection; public delegate void MyDelegate( int i ); public ref class MainClass { public: event MyDelegate^ ev; }; int main() { Type^ delegateType = MainClass::typeid->GetEvent( "ev" )->EventHandlerType; MethodInfo^ invoke = delegateType->GetMethod( "Invoke" ); array<ParameterInfo^>^pars = invoke->GetParameters(); System::Collections::IEnumerator^ myEnum = pars->GetEnumerator(); while ( myEnum->MoveNext() ) { ParameterInfo^ p = safe_cast<ParameterInfo^>(myEnum->Current); Console::WriteLine( p->ParameterType ); } } // The example displays the following output: // System.Int32
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1