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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.

[Visual Basic]
<Flags>
<Serializable>
Public Enum EventAttributes
[C#]
[Flags]
[Serializable]
public enum EventAttributes
[C++]
[Flags]
[Serializable]
__value public enum EventAttributes
[JScript]
public
   Flags
 Serializable
enum EventAttributes

Remarks

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.

Members

Member name Description Value
None

Supported by the .NET Compact Framework.

Specifies that the event has no attributes. 0
ReservedMask

Supported by the .NET Compact Framework.

Specifies a reserved flag for common language runtime use only. 1024
RTSpecialName

Supported by the .NET Compact Framework.

Specifies that the common language runtime should check name encoding. 1024
SpecialName

Supported by the .NET Compact Framework.

Specifies that the event is special in a way described by the name. 512

Example

[Visual Basic] 
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

[C#] 
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);
   }
}

[C++] 
#using <mscorlib.dll>

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

__gc class MyApplication
{
private: 
    __delegate void MyEvent(Object* temp);
public:
    // Create the callee transient dynamic assembly.
    static TypeBuilder* CreateCallee(AppDomain* myDomain) 
    {
        AssemblyName* assemblyName = new AssemblyName();
        assemblyName->Name = S"EmittedAssembly";

        // Create the callee dynamic assembly.
        AssemblyBuilder* myAssembly = myDomain->DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess::Run);

        // Create a dynamic module
        ModuleBuilder* myModule = myAssembly->DefineDynamicModule(S"EmittedModule");

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

        Type* typeArray __gc[] = new Type* __gc[1];
        typeArray[0] = __typeof(Object);
        MethodBuilder* myMethod1 = helloWorldClass->DefineMethod(S"OnClick", MethodAttributes::Public, __typeof(void), typeArray);

        ILGenerator* methodIL1 = myMethod1->GetILGenerator();
        methodIL1->Emit(OpCodes::Ret);
        MethodBuilder* myMethod2 = helloWorldClass->DefineMethod(S"OnMouseUp", MethodAttributes::Public, __typeof(void), typeArray);
        ILGenerator* methodIL2 = myMethod2->GetILGenerator();
        methodIL2->Emit(OpCodes::Ret);

        // Create the events.
        EventBuilder* myEvent1 = helloWorldClass->DefineEvent(S"Click", EventAttributes::None,
            __typeof(MyEvent));
        myEvent1->SetRaiseMethod(myMethod1);
        EventBuilder* myEvent2 = helloWorldClass->DefineEvent(S"MouseUp", EventAttributes::None,
            __typeof(MyEvent));
        myEvent2->SetRaiseMethod(myMethod2);

        helloWorldClass->CreateType();
        return(helloWorldClass);
    }
};

int main()
{
    TypeBuilder* helloWorldClass = MyApplication::CreateCallee(Thread::GetDomain());

    EventInfo* info[] = helloWorldClass->GetEvents(static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Instance));
    Console::WriteLine(S"'HelloWorld' type has following events :");

    for (int i=0; i < info->Length; i++)
        Console::WriteLine(info[i]->Name);

    return 0;
}

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Namespace: System.Reflection

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

Assembly: Mscorlib (in Mscorlib.dll)

See Also

System.Reflection Namespace

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