Attaches an event handler to a COM object.
Assembly: System.Core (in System.Core.dll)
This method is similar to the EventInfo.AddEventHandler(Object, Delegate) method except that it allows you to attach events to COM objects.
If target is a COM object, this method adds a delegate to an event by using the ComEventsHelper.Combine(Object, Guid, Int32, Delegate) method.
facilitates registering COM event sinks that forward calls to corresponding managed delegates. It requires the following information:
The target object itself (target).
The GUID of the source interface.
The DispID of the method on the COM interface that corresponds to the specified event.
The delegate that would be invoked when the COM object triggers the corresponding event (handler).
looks up the corresponding COM source interface (specified as the first parameter of the ComEventInterfaceAttribute.ComEventInterfaceAttribute(Type, Type) constructor). It then looks up a method on the source interface whose name is identical to the event name. The value of GuidAttribute on the source interface is the GUID that is passed to ComEventsHelper.Combine(Object, Guid, Int32, Delegate); the value of DispIDAttribute on the method is the DispID value that is passed to ComEventsHelper.Combine(Object, Guid, Int32, Delegate).
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.