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EventAttributes Enumeration

Specifies the attributes of an event.

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.

Namespace:  System.Reflection
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
<SerializableAttribute> _
<FlagsAttribute> _
<ComVisibleAttribute(True)> _
Public Enumeration EventAttributes
'Usage
Dim instance As EventAttributes

Member nameDescription
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkNoneSpecifies that the event has no attributes.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkSpecialNameSpecifies that the event is special in a way described by the name.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkReservedMaskSpecifies a reserved flag for common language runtime use only.
Supported by the .NET Compact FrameworkSupported by the XNA FrameworkRTSpecialNameSpecifies that the common language runtime should check name encoding.

EventAttributes values may be combined using the bitwise OR operation to get the appropriate combination.

These enums are defined in the corhdr.h file and are a combination of bits and enumerators.

The following example uses reflection emit to create a type with two events. It uses EventAttributes.None to specify that the events have no attributes.

Imports System
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 'Main

   ' 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 'MyApplication

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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