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)

[SerializableAttribute]
[FlagsAttribute]
[ComVisibleAttribute(true)]
public enum EventAttributes

Member nameDescription
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.

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.

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);
   }
}

Universal Windows Platform
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
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