EventAttributes Enumeration
.NET Framework 3.0
Specifies the attributes of an event.
Assembly: mscorlib (in mscorlib.dll)
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Namespace: System.ReflectionAssembly: mscorlib (in mscorlib.dll)
'Declaration <SerializableAttribute> _ <ComVisibleAttribute(True)> _ <FlagsAttribute> _ Public Enumeration EventAttributes 'Usage Dim instance As EventAttributes
/** @attribute SerializableAttribute() */ /** @attribute ComVisibleAttribute(true) */ /** @attribute FlagsAttribute() */ public enum EventAttributes
SerializableAttribute ComVisibleAttribute(true) FlagsAttribute public enum EventAttributes
| Member name | Description | |
|---|---|---|
![]() | None | Specifies that the event has no attributes. |
![]() | ReservedMask | Specifies a reserved flag for common language runtime use only. |
![]() | RTSpecialName | Specifies that the common language runtime should check name encoding. |
![]() | SpecialName | Specifies that the event is special in a way described by the name. |
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
import System.*;
import System.Threading.*;
import System.Reflection.*;
import System.Reflection.Emit.*;
public class MyApplication
{
/** @delegate
*/
public delegate void MyEvent(Object temp);
public static void main(String[] args)
{
TypeBuilder helloWorldClass =
CreateCallee(System.Threading.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].get_Name());
}
} //main
// Create the callee transient dynamic assembly.
private static TypeBuilder CreateCallee(AppDomain myDomain)
{
AssemblyName assemblyName = new AssemblyName();
assemblyName.set_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, void.class.ToType(),
new Type[] { Object.class.ToType() });
ILGenerator methodIL1 = myMethod1.GetILGenerator();
methodIL1.Emit(OpCodes.Ret);
MethodBuilder myMethod2 = helloWorldClass.DefineMethod("OnMouseUp",
MethodAttributes.Public, void.class.ToType(),
new Type[] { Object.class.ToType() });
ILGenerator methodIL2 = myMethod2.GetILGenerator();
methodIL2.Emit(OpCodes.Ret);
// Create the events.
EventBuilder myEvent1 = helloWorldClass.DefineEvent("Click",
EventAttributes.None, MyEvent.class.ToType());
myEvent1.SetRaiseMethod(myMethod1);
EventBuilder myEvent2 = helloWorldClass.DefineEvent("MouseUp",
EventAttributes.None, MyEvent.class.ToType());
myEvent2.SetRaiseMethod(myMethod2);
helloWorldClass.CreateType();
return helloWorldClass;
} //CreateCallee
}//MyApplication
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Community Additions
ADD
Show:
