The Handler property contains a reference to the handler that processes the HTTP request. The handler can be specified by using the httpHandlers element, or by using a custom handler defined in user code. For more information about handlers, see HTTP Handlers and HTTP Modules Overview.
The reference to the Handler property will remain the same even after the current page has been changed by a server-side method, such as the Execute method or the Transfer method.
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)