When the System.Web.UI.WebControls.LoginView controls switches views, it removes the controls from the previous template and creates new child controls from the new template. The LoginView.OnViewChanging(EventArgs) method is called before the previous controls are removed.

Use the LoginView.OnViewChanging(EventArgs) 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 LoginView.OnViewChanging(EventArgs) 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.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in System.Web.dll)
Assembly Versions: 2.0.0.0
Since: .NET 2.0