Question

我的xaml中有一个webview，由于webview的大小，它无法显示所有的html内容，因此有一个scrollviewer。我想要打印html文件的所有内容，但是当我在设备魅力中选择一台打印机时，预览页面只显示当前在webview中显示的内容，隐藏的内容无法显示在预览页面中，任何人可以帮助？以下是我的代码。

public sealed partial class MainPage : Page
{
    PrintDocument printDocument;
    IPrintDocumentSource printDocumentSource;
    WebView wv;

    public MainPage()
    {
        this.InitializeComponent();
        printDocument = new PrintDocument();
        printDocumentSource = printDocument.DocumentSource;
        printDocument.Paginate += OnPrintDocumentPaginate;
        printDocument.GetPreviewPage += OnPrintDocumentGetPreviewPage;
        printDocument.AddPages += OnPrintDocumentAddPages;
        wv = FindName("webviewPrint") as WebView;            
    }

    private void OnPrintDocumentAddPages(object sender, AddPagesEventArgs e)
    {
        printDocument.AddPage(wv);
        printDocument.AddPagesComplete();
    }

    private void OnPrintDocumentGetPreviewPage(object sender, GetPreviewPageEventArgs e)
    {
        printDocument.SetPreviewPage(e.PageNumber, wv);
    }

    private void OnPrintDocumentPaginate(object sender, PaginateEventArgs e)
    {
        printDocument.SetPreviewPageCount(1, PreviewPageCountType.Final);            
    }

    private void OnPrintManagerPrintTaskRequested(PrintManager sender, PrintTaskRequestedEventArgs args)
    {
        args.Request.CreatePrintTask("Hello Printer", OnPrintTaskSourceRequested);

    }

    void OnPrintTaskSourceRequested(PrintTaskSourceRequestedArgs args)
    {
        args.SetSource(printDocumentSource);
    }

    protected override void OnNavigatedTo(NavigationEventArgs e)
    {
        PrintManager.GetForCurrentView().PrintTaskRequested += OnPrintManagerPrintTaskRequested;
        base.OnNavigatedTo(e);
    }

    protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)
    {
        PrintManager.GetForCurrentView().PrintTaskRequested -= OnPrintManagerPrintTaskRequested;
        base.OnNavigatingFrom(e);
    }

}

Answer 1

在官方Windows SDK示例的Print sample中，查看场景2.它打印的内容对于一个屏幕来说太大了。该示例使用 RichTextBlock ，您可以在案例中将其更改为 WebView 。

在windows8中打印webview的不可见内容

1 个答案: