Provides data for the PeekCompleted event. When your asynchronous peek operation calls an event handler, an instance of this class is passed to the handler.
Assembly: System.Messaging (in System.Messaging.dll)
Thetype exposes the following members.
|Equals(Object)||Determines whether the specified object is equal to the current object. (Inherited from Object.)|
|Finalize||Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)|
|GetHashCode||Serves as the default hash function. (Inherited from Object.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|MemberwiseClone||Creates a shallow copy of the current Object. (Inherited from Object.)|
|ToString||Returns a string that represents the current object. (Inherited from Object.)|
When you use event notification to peek (read without removing) messages asynchronously from the queue, you must create a method that handles your message processing. Your code must call BeginPeek to begin the asynchronous processing. When a message is peeked, your application is notified through the PeekCompleted event. An instance of is passed into the event delegate that calls your event handler. The data associated with the PeekCompleted event is contained in the delegate's AsyncResult parameter.
There are two ways to provide notification of event completion: event notification and callbacks. is used only with event notification. For information comparing callbacks and event notification, see "Events vs. Callbacks" on MSDN.
provides access to the message that initiated the end of the asynchronous peek operation, through the Message member. This is an alternate access to the message, and behaves much the same as a call to MessageQueue.EndPeek.
The following code example creates an event handler for the PeekCompleted event and associates it with the event delegate by using the PeekCompletedEventHandler. The event handler, MyPeekCompleted, peeks a message and writes its label to the screen.
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.