Frame.CanGoBack Property (System.Windows.Controls)

Library

MSDN Library
Web Development
Silverlight
Silverlight 4 Beta
.NET Framework Class Library for Silverlight
System.Windows.Controls Namespace
Frame Class
Frame Properties

CacheSize Property

CanGoBack Property

CanGoForward Property
ContentLoader Property
CurrentSource Property
JournalOwnership Property
Source Property
UriMapper Property

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Frame..::.CanGoBack Property
3.0 3.5 Silverlight 34.0

.NET Framework Class Library for Silverlight

Frame..::.CanGoBack Property

[Note: This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]

Gets a value that indicates whether there is at least one entry in the back navigation history.

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

Syntax

Copy to Clipboard Print

'Usage

Dim instance As Frame
Dim value As Boolean

value = instance.CanGoBack


'Declaration

Public Property CanGoBack As Boolean
    Get
    Friend Set

Property Value

Type: System..::.Boolean
true if there is at least one entry in the back navigation history; otherwise, false.

Remarks

Dependency property identifier field: CanGoBackProperty

The GoBack method throws an InvalidOperationException exception if there are no entries in the back navigation history. To determine whether there is at least one entry in the back navigation history, check the value of the CanGoBack property.

Examples

The following example shows event handler code for buttons on a frame that allow forward and back navigation.

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Private Sub BackNavButton_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
    If (ContentFrame.CanGoBack) Then
        ContentFrame.GoBack()
    End If
End Sub

Private Sub ForwardNavButton_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
    If (ContentFrame.CanGoForward) Then
        ContentFrame.GoForward()
    End If
End Sub

Platforms

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

See Also

Reference

System.Windows.Controls Namespace

Other Resources

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