FrameworkElement.BringIntoView Method ()
Attempts to bring this element into view, within any scrollable regions it is contained within.
Assembly: PresentationFramework (in PresentationFramework.dll)
By calling this method, you raise a RequestBringIntoView event that originates from the current element. This event is raised so that it can be handled by a ScrollViewer, or a derived or similar class. The expected behavior is that the event is handled by the parent element, marked handled in the event data, and the source of the event is brought into view through the logic embedded in the ScrollViewer control. Neither the RequestBringIntoView event nor the method transmit any information about success or failure, other than that the event is typically marked handled on success. Reasons for failure can include the element settings, such as Visibility being some value other than Visible.
If you use the signature that does not specify a targetRectangle, then the entire element size (its RenderSize) will be made visible.
By calling this method, you potentially will call MakeVisible on any parent scrollable area that contains the element. If this element is not contained in a scrollable area, the RequestBringIntoView event is still raised, but there will be no effect because there are no event listeners.
The following example implements a handler for an application navigation event that responds whenever the uniform resource identifier (URI) being navigated to includes a fragment. The fragment is named in the URI following the hash sign (#), and the implemented behavior causes the element to scroll into view within the frame. RequestBringIntoView request that scrolling behavior in the example.and
Private Sub browserFrame_FragmentNavigation(ByVal sender As Object, ByVal e As FragmentNavigationEventArgs) Dim element As FrameworkElement = TryCast(LogicalTreeHelper.FindLogicalNode(DirectCast(DirectCast(e.Navigator, ContentControl).Content, DependencyObject), e.Fragment), FrameworkElement) If (element Is Nothing) Then ' Redirect to error page ' Note - You can't navigate from within a FragmentNavigation event handler, ' hence creation of an async dispatcher work item Dim callback As New DispatcherOperationCallback(AddressOf Me.FragmentNotFoundNavigationRedirect) Me.Dispatcher.BeginInvoke(DispatcherPriority.Normal, callback, Nothing) End If e.Handled = True End Sub Function FragmentNotFoundNavigationRedirect(ByVal unused As Object) As Object Me.browserFrame.Navigate(New Uri("FragmentNotFoundPage.xaml", UriKind.Relative)) Return Nothing End Function
Available since 3.0