Adds an event handler to an event source.
[Visual Basic] Public Sub AddEventHandler( _ ByVal target As Object, _ ByVal handler As Delegate _ ) [C#] public void AddEventHandler( object target, Delegate handler ); [C++] public: void AddEventHandler( Object* target, Delegate* handler ); [JScript] public function AddEventHandler( target : Object, handler : Delegate );
- The event source.
- Encapsulates a method or methods to be invoked when the event is raised by the target.
|InvalidOperationException||The MethodInfo returned by GetAddMethod is a null reference (Nothing in Visual Basic).|
|ArgumentException||The handler that was passed in cannot be used.|
|MethodAccessException||The caller does not have access permission to the member.|
|TargetException||The target parameter is a null reference (Nothing in Visual Basic) and the event is not static.
The EventInfo is not declared on the target.
This method attempts to add a delegate to synchronize the event on the target object.Each time the event is raised by the target parameter, the method or methods encapsulated by the handler will be invoked.
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, Common Language Infrastructure (CLI) Standard
.NET Framework Security:
- ReflectionPermission when invoked late-bound through mechanisms such as Type.InvokeMember. Associated enumeration: ReflectionPermissionFlag.MemberAccess.
- ReflectionPermission for reflecting non-public objects. Associated enumeration: ReflectionPermissionFlag.MemberAccess