Assembly: System.Messaging (in system.messaging.dll)
The ActiveXMessageFormatter is compatible with messages sent using Message Queuing COM components, allowing interoperability with applications that use the MSMQ COM control.
The ActiveXMessageFormatter can serialize most primitives, as well as objects that implement the IPersistStream OLE interface. It can deserialize the same set of primitives, but requires further effort when deserializing a COM object (for example, an object created using Visual Basic 6.0) that implements IPersistStream. The object to deserialize must be in memory by first importing the object into a .NET Framework application.
When an application sends a message to the queue using an instance of the MessageQueue class, the formatter serializes the object into a stream and inserts it into the message body. When reading from a queue using a MessageQueue, the formatter deserializes the message data into the Body property of a Message.
ActiveX serialization is very compact, which makes using the ActiveXMessageFormatter and MSMQ COM control a very fast method of serialization.
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.