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LoginView.OnViewChanging Method

Raises the ViewChanging event before the LoginView control switches views.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

abstract OnViewChanging : 
        e:EventArgs -> unit  
override OnViewChanging : 
        e:EventArgs -> unit

Parameters

e
Type: System.EventArgs

An EventArgs object that contains the event data.

When the LoginView controls switches views, it removes the controls from the previous template and creates new child controls from the new template. The OnViewChanging method is called before the previous controls are removed.

Use the OnViewChanging method to perform any necessary processing, such as saving control information, before the controls are removed.

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The OnViewChanging method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors

When overriding OnViewChanging in a derived class, be sure to call the base class’s OnViewChanging method so that registered delegates receive the event.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

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.

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