public async Task ShowPrintUIAsync()
{
// get the number of Pdf pages to print
NumberOfPhotos = await((FlipPdfViewerControl)hostControl).GetPrintPageCount();
// Catch and print out any errors reported
try
{
await PrintManager.ShowPrintUIAsync();
}
catch (Exception e)
{
HostErrorMsgHandler?.Invoke("Error printing: " + e.Message + ", hr=" + e.HResult);
}
}
/// <summary>
/// Register the control for printing. This should be called in the OnNavigatedTo override of
/// the page that hosts this control.
/// </summary>
public void RegisterForPrinting()
{
if (null != _printHelper)
{
_printHelper.RegisterForPrinting();
PdfStatusMessage = "Registered for Printing";
HostStatusMsgHandler?.Invoke(PdfStatusMessage);
}
else
{
PrintingIsSupported = false;
PdfErrorMessage = "Printing is not supported.";
HostErrorMsgHandler?.Invoke(PdfErrorMessage);
}
}
/// <summary>
/// Default constructor.
/// </summary>
public FlipPdfViewerControl()
{
// default background color
this.Background = new SolidColorBrush(Colors.DarkGray);
// hook the keyboard
Window.Current.CoreWindow.CharacterReceived += CoreWindow_CharacterReceived;
// Loaded is where we hook up component control event handlers
Loaded += FlipPdfViewerControl_Loaded;
// set the default Pdf background color
PdfBackgroundColor = Windows.UI.Colors.Beige;
// see if printing is supported by this OS and if so, instantiate the print code.
if (PrintManager.IsSupported())
{
PrintingIsSupported = true;
_printHelper = new FlipViewPagePrintHelper(this, SetStatusMessage, SetErrorMessage);
}
else
{
PrintingIsSupported = false;
PdfErrorMessage = "Printing is not supported.";
HostErrorMsgHandler?.Invoke(PdfErrorMessage);
}
this.InitializeComponent();
}