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EventInfo.AddEventHandler Method

Adds an event handler to an event source.

[Visual Basic]
Public Sub AddEventHandler( _
   ByVal target As Object, _
   ByVal handler As Delegate _
public void AddEventHandler(
 object target,
 Delegate handler
public: void AddEventHandler(
 Object* target,
 Delegate* handler
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.


Exception Type Condition
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: 

See Also

EventInfo Class | EventInfo Members | System.Reflection Namespace | Object | Delegate | EventHandler