Page.OnNavigatingFrom Method


Called just before a page is no longer the active page in a frame.

Namespace:  System.Windows.Controls
Assembly:  System.Windows.Controls.Navigation (in System.Windows.Controls.Navigation.dll)

Protected Overridable Sub OnNavigatingFrom ( _
	e As NavigatingCancelEventArgs _


Type: System.Windows.Navigation.NavigatingCancelEventArgs
An object that contains the event data.

You override the OnNavigatingFrom method to perform any actions on the page just before it becomes inactive.

Typically, you can use the OnNavigatingFrom method instead of creating an event handler for the Navigating event. Using the OnNavigatingFrom method is preferable because you do not have to remove the event handler from the NavigationService object to avoid object lifetime issues.

The following example shows how to override the OnNavigatingFrom method and use the NavigatingCancelEventArgs object to determine if a child window is displayed.

Partial Public Class About
    Inherits Page

    Public Sub New()
    End Sub

    Protected Overrides Sub OnNavigatingFrom(ByVal e As System.Windows.Navigation.NavigatingCancelEventArgs)
        If (e.Uri.ToString().Contains("/Home")) Then
            Dim surveyChildWindow As New SurveyWindow
        End If

    End Sub
End Class


Supported in: 5, 4, 3

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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