Events

RadBook exposes the following events:

  • FoldActivated - raised when the user hovers the fold with the mouse.

  • FoldDeactivated - raised when the fold is not active - e.g. the user is not over it.

  • PageChanged - raised when the page set is changed.

  • PageFlipStarted - raised when user starts to flip a page.

  • PreviewPageFlipStarted - raised when user starts to flip a page. Allows the developer to cancel the page flip.

  • PageFlipEnded - raised when the flip is finished. This happen when the page is changed, or user canceled the flip.

Please find below and example of how to use those events:

Example 1: Subscribing to the RadBook events

<Grid x:Name="LayoutRoot" Background="Purple"> 
    <telerik:RadBook x:Name="RadBook1"  
                        Margin="50" 
                        FoldActivated="RadBook_FoldActivated" 
                        FoldDeactivated="RadBook1_FoldDeactivated" 
                        FoldSize="150,150" 
                        PageChanged="RadBook1_PageChanged" 
                        PageFlipEnded="RadBook1_PageFlipEnded" 
                        PageFlipStarted="RadBook1_PageFlipStarted" 
                        PreviewPageFlipStarted="RadBook1_PreviewPageFlipStarted"> 
        <telerik:RadBookItem Background="Red"> 
            <StackPanel> 
                <TextBlock FontSize="36" Text="Page 1" /> 
                <Button Content="Click Me" /> 
            </StackPanel> 
        </telerik:RadBookItem> 
        <telerik:RadBookItem Background="BlueViolet"> 
            <StackPanel> 
                <TextBlock HorizontalAlignment="Right"  
                            FontSize="36" 
                            Text="Page 2" /> 
                <Image Width="320"  
                        Height="240" 
                        Source="Koala.jpg" /> 
            </StackPanel> 
        </telerik:RadBookItem> 
        <telerik:RadBookItem Background="RosyBrown"> 
            <TextBlock FontSize="36" Text="Page 3" /> 
        </telerik:RadBookItem> 
        <telerik:RadBookItem Background="Chocolate"> 
            <TextBlock HorizontalAlignment="Right"  
                        FontSize="36" 
                        Text="Page 4" /> 
        </telerik:RadBookItem> 
    </telerik:RadBook> 
</Grid> 

Example 2: Adding event handlers

public partial class MainPage : UserControl 
{ 
    public MainPage() 
    { 
        InitializeComponent(); 
    } 
    private void RadBook_FoldActivated(object sender, Telerik.Windows.Controls.FoldEventArgs e) 
    { 
        FoldPosition position = e.Position; 
    } 
    private void RadBook1_FoldDeactivated(object sender, Telerik.Windows.Controls.FoldEventArgs e) 
    { 
    } 
    private void RadBook1_PageChanged(object sender, Telerik.Windows.RadRoutedEventArgs e) 
    { 
        int currentPage = RadBook1.RightPageIndex; 
    } 
    private void RadBook1_PageFlipEnded(object sender, Telerik.Windows.Controls.PageFlipEventArgs e) 
    { 
        RadBookItem flippedPage = e.Page; 
    } 
    private void RadBook1_PageFlipStarted(object sender, Telerik.Windows.Controls.PageFlipEventArgs e) 
    { 
        RadBookItem flippedPage = e.Page; 
    } 
    private void RadBook1_PreviewPageFlipStarted(object sender, Telerik.Windows.Controls.PageFlipEventArgs e) 
    { 
        RadBookItem flippedPage = e.Page; 
        e.Handled = true;//if the page flip should stop 
    } 
} 
Partial Public Class MainPage 
    Inherits UserControl 
    Public Sub New() 
        InitializeComponent() 
    End Sub 
    Private Sub RadBook_FoldActivated(ByVal sender As Object, ByVal e As Telerik.Windows.Controls.FoldEventArgs) 
        Dim position As FoldPosition = e.Position 
    End Sub 
    Private Sub RadBook1_FoldDeactivated(ByVal sender As Object, ByVal e As Telerik.Windows.Controls.FoldEventArgs) 
    End Sub 
    Private Sub RadBook1_PageChanged(ByVal sender As Object, ByVal e As Telerik.Windows.RadRoutedEventArgs) 
        Dim currentPage As Integer = RadBook1.RightPageIndex 
    End Sub 
    Private Sub RadBook1_PageFlipEnded(ByVal sender As Object, ByVal e As Telerik.Windows.Controls.PageFlipEventArgs) 
        Dim flippedPage As RadBookItem = e.Page 
    End Sub 
    Private Sub RadBook1_PageFlipStarted(ByVal sender As Object, ByVal e As Telerik.Windows.Controls.PageFlipEventArgs) 
        Dim flippedPage As RadBookItem = e.Page 
    End Sub 
    Private Sub RadBook1_PreviewPageFlipStarted(ByVal sender As Object, ByVal e As Telerik.Windows.Controls.PageFlipEventArgs) 
        Dim flippedPage As RadBookItem = e.Page 
        e.Handled = True 'if the page flip should stop ' 
    End Sub 
End Class 
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