/// <summary>
/// Handles can-execute events based on whether the viewer is displaying the last page or not.
/// </summary>
/// <param name="sender">The originator of the request.</param>
/// <param name="eventArgs">The event arguments.</param>
public override void CanGoForward(object sender, CanExecuteRoutedEventArgs eventArgs)
{
CrystalReportViewer viewer = this.host.Child as CrystalReportViewer;
PageView pageViewer = viewer.Controls[0] as PageView;
eventArgs.CanExecute =
viewer != null &&
viewer.ReportSource != null &&
(pageViewer == null || viewer.GetCurrentPageNumber() != pageViewer.GetLastPageNumber());
}
/// <summary>
/// Handles can-execute events based on whether the viewer is displaying the first page or not.
/// </summary>
/// <param name="sender">The originator of the request.</param>
/// <param name="eventArgs">The event arguments.</param>
public override void CanGoBack(object sender, CanExecuteRoutedEventArgs eventArgs)
{
CrystalReportViewer viewer = this.host.Child as CrystalReportViewer;
eventArgs.CanExecute = viewer != null && viewer.ReportSource != null && viewer.GetCurrentPageNumber() != 1;
}
protected bool isFirstPage()
{
return(opened ? ctlViewer.GetCurrentPageNumber() < 2 : true);
}
