EventAttributes Énumération

Définition

Espace de noms:

System.Reflection

Assembly:

System.Runtime.dll

Spécifie les attributs d'un événement.

Cette énumération prend en charge une combinaison au niveau du bit de ses valeurs membres.

public enum class EventAttributes

[System.Flags]
public enum EventAttributes

[<System.Flags>]
type EventAttributes = 

Public Enum EventAttributes

Héritage

Object

ValueType

Enum

EventAttributes

Attributs

FlagsAttribute

Champs

None	0	Spécifie que l'événement ne possède aucun attribut.
ReservedMask	1024	Indique un indicateur réservé pour une utilisation par le Common Language Runtime uniquement.
RTSpecialName	1024	Indique que le Common Language Runtime doit vérifier l'encodage des noms.
SpecialName	512	Spécifie qu'il s'agit d'un événement spécial, tel qu'indiqué par son nom.

Exemples

L’exemple suivant utilise l’émission de réflexion pour créer un type avec deux événements. Il utilise Aucun pour spécifier que les événements n’ont pas d’attributs.

using namespace System;
using namespace System::Threading;
using namespace System::Reflection;
using namespace System::Reflection::Emit;

ref class MyApplication
{
private:
   delegate void MyEvent( Object^ temp );

public:

   // Create the callee transient dynamic assembly.
   static TypeBuilder^ CreateCallee( AppDomain^ myDomain )
   {
      AssemblyName^ assemblyName = gcnew AssemblyName;
      assemblyName->Name = "EmittedAssembly";
      
      // Create the callee dynamic assembly.
      AssemblyBuilder^ myAssembly = myDomain->DefineDynamicAssembly( assemblyName, AssemblyBuilderAccess::Run );
      
      // Create a dynamic module
      ModuleBuilder^ myModule = myAssembly->DefineDynamicModule( "EmittedModule" );
      
      // Define a public class named "HelloWorld" in the assembly.
      TypeBuilder^ helloWorldClass = myModule->DefineType( "HelloWorld", TypeAttributes::Public );
      array<Type^>^typeArray = gcnew array<Type^>(1);
      typeArray[ 0 ] = Object::typeid;
      MethodBuilder^ myMethod1 = helloWorldClass->DefineMethod( "OnClick", MethodAttributes::Public, void::typeid, typeArray );
      ILGenerator^ methodIL1 = myMethod1->GetILGenerator();
      methodIL1->Emit( OpCodes::Ret );
      MethodBuilder^ myMethod2 = helloWorldClass->DefineMethod( "OnMouseUp", MethodAttributes::Public, void::typeid, typeArray );
      ILGenerator^ methodIL2 = myMethod2->GetILGenerator();
      methodIL2->Emit( OpCodes::Ret );
      
      // Create the events.
      EventBuilder^ myEvent1 = helloWorldClass->DefineEvent( "Click", EventAttributes::None, MyEvent::typeid );
      myEvent1->SetRaiseMethod( myMethod1 );
      EventBuilder^ myEvent2 = helloWorldClass->DefineEvent( "MouseUp", EventAttributes::None, MyEvent::typeid );
      myEvent2->SetRaiseMethod( myMethod2 );
      helloWorldClass->CreateType();
      return (helloWorldClass);
   }
};

int main()
{
   TypeBuilder^ helloWorldClass = MyApplication::CreateCallee( Thread::GetDomain() );
   array<EventInfo^>^info = helloWorldClass->GetEvents( static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Instance) );
   Console::WriteLine( "'HelloWorld' type has following events :" );
   for ( int i = 0; i < info->Length; i++ )
      Console::WriteLine( info[ i ]->Name );
   return 0;
}

using System;
using System.Threading;
using System.Reflection;
using System.Reflection.Emit;

public class MyApplication
{
   public delegate void MyEvent(Object temp);
   public static void Main()
   {
      TypeBuilder helloWorldClass = CreateCallee(Thread.GetDomain());

      EventInfo[] info =
         helloWorldClass.GetEvents(BindingFlags.Public | BindingFlags.Instance);
      Console.WriteLine("'HelloWorld' type has following events :");
      for(int i=0; i < info.Length; i++)
         Console.WriteLine(info[i].Name);
   }

   // Create the callee transient dynamic assembly.
   private static TypeBuilder CreateCallee(AppDomain myDomain)
   {
      AssemblyName assemblyName = new AssemblyName();
      assemblyName.Name = "EmittedAssembly";

      // Create the callee dynamic assembly.
      AssemblyBuilder myAssembly =
         myDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
      // Create a dynamic module named "CalleeModule" in the callee.
      ModuleBuilder myModule = myAssembly.DefineDynamicModule("EmittedModule");

      // Define a public class named "HelloWorld" in the assembly.
      TypeBuilder helloWorldClass =
         myModule.DefineType("HelloWorld", TypeAttributes.Public);

      MethodBuilder myMethod1 = helloWorldClass.DefineMethod("OnClick",
         MethodAttributes.Public, typeof(void), new Type[]{typeof(Object)});
      ILGenerator methodIL1 = myMethod1.GetILGenerator();
      methodIL1.Emit(OpCodes.Ret);
      MethodBuilder myMethod2 = helloWorldClass.DefineMethod("OnMouseUp",
         MethodAttributes.Public, typeof(void), new Type[]{typeof(Object)});
      ILGenerator methodIL2 = myMethod2.GetILGenerator();
      methodIL2.Emit(OpCodes.Ret);

      // Create the events.
      EventBuilder myEvent1 = helloWorldClass.DefineEvent("Click", EventAttributes.None,
         typeof(MyEvent));
      myEvent1.SetRaiseMethod(myMethod1);
      EventBuilder myEvent2 = helloWorldClass.DefineEvent("MouseUp", EventAttributes.None,
         typeof(MyEvent));
      myEvent2.SetRaiseMethod(myMethod2);

      helloWorldClass.CreateType();
      return(helloWorldClass);
   }
}

Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit

Public Class MyApplication

   Delegate Sub MyEvent(temp As Object)

   Public Shared Sub Main()
      Dim helloWorldClass As TypeBuilder = CreateCallee(Thread.GetDomain())

      Dim info As EventInfo() = helloWorldClass.GetEvents(BindingFlags.Public Or _
                                                          BindingFlags.Instance)
      Console.WriteLine("'HelloWorld' type has following events :")
      Dim i As Integer
      For i = 0 To info.Length - 1
         Console.WriteLine(info(i).Name)
      Next i
   End Sub

   ' Create the callee transient dynamic assembly.
   Private Shared Function CreateCallee(myDomain As AppDomain) As TypeBuilder
      Dim myAssemblyName As New AssemblyName()
      myAssemblyName.Name = "EmittedAssembly"

      ' Create the callee dynamic assembly.
      Dim myAssembly As AssemblyBuilder = myDomain.DefineDynamicAssembly _
                                          (myAssemblyName, AssemblyBuilderAccess.Run)
      ' Create a dynamic module named "CalleeModule" in the callee
      Dim myModule As ModuleBuilder = myAssembly.DefineDynamicModule("EmittedModule")

      ' Define a public class named "HelloWorld" in the assembly.
      Dim helloWorldClass As TypeBuilder = myModule.DefineType _
                                           ("HelloWorld", TypeAttributes.Public)

      Dim myMethod1 As MethodBuilder = helloWorldClass.DefineMethod _
                    ("OnClick", MethodAttributes.Public, Nothing, New Type() {GetType(Object)})
      Dim methodIL1 As ILGenerator = myMethod1.GetILGenerator()
      methodIL1.Emit(OpCodes.Ret)
      Dim myMethod2 As MethodBuilder = helloWorldClass.DefineMethod _
                   ("OnMouseUp", MethodAttributes.Public, Nothing, New Type() {GetType(Object)})
      Dim methodIL2 As ILGenerator = myMethod2.GetILGenerator()
      methodIL2.Emit(OpCodes.Ret)

      ' Create the events.
      Dim myEvent1 As EventBuilder = helloWorldClass.DefineEvent _
                                         ("Click", EventAttributes.None, GetType(MyEvent))
      myEvent1.SetRaiseMethod(myMethod1)
      Dim myEvent2 As EventBuilder = helloWorldClass.DefineEvent _
                                         ("MouseUp", EventAttributes.None, GetType(MyEvent))
      myEvent2.SetRaiseMethod(myMethod2)

      helloWorldClass.CreateType()
      Return helloWorldClass
   End Function 'CreateCallee
End Class

Remarques

EventAttributes les valeurs peuvent être combinées à l’aide de l’opération OR au niveau du bit pour obtenir la combinaison appropriée.

Ces énumérations sont définies dans le fichier corhdr.h et sont une combinaison de bits et d’énumérateurs.