您可以使用HtmlToPdfConverter

private void ConvertUrlToPdf()
{
    try {
        String serverIPAddress = serverIP.Text;
        uint serverPortNumber = uint.Parse (serverPort.Text);

        // create the HTML to PDF converter object
        HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter (serverIPAddress,serverPortNumber);

        // set service password if necessary
        if (serverPassword.Text.Length > 0)
            htmlToPdfConverter.ServicePassword = serverPassword.Text;

        // set PDF page size
        htmlToPdfConverter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;

        // set PDF page orientation
        htmlToPdfConverter.PdfDocumentOptions.PdfPageOrientation = PdfPageOrientation.Portrait;

        // convert the HTML page from given URL to PDF in a buffer
        byte[] pdfBytes = htmlToPdfConverter.ConvertUrl (urlToConvert.Text);

        string documentsFolder = Environment.GetFolderPath (Environment.SpecialFolder.MyDocuments); 
        string outPdfFile = System.IO.Path.Combine (documentsFolder,"EvoHtmlToPdf.pdf");

        // write the PDF buffer in output file
        System.IO.File.WriteAllBytes (outPdfFile,pdfBytes);

        // open the PDF document in the default PDF viewer
        UIDocumentInteractionController pdfViewer = UIDocumentInteractionController.FromUrl (Foundation.NSUrl.FromFilename (outPdfFile));
        pdfViewer.PresentOpenInMenu (this.View.Frame,this.View,true);

    } catch (Exception ex) {
        UIAlertView alert = new UIAlertView ();
        alert.Title = "Error";
        alert.AddButton ("OK");
        alert.Message = ex.Message;
        alert.Show ();
    }
}

另一个

您可以看到此url

您可以将HTML作为流读取，并将其存储到本地，如下所示，

public static class FileManager
{
    public static async Task<MemoryStream> DownloadFileAsStreamAsync(string url)
    {
        try
        {
            var stream = new MemoryStream();
            using (var httpClient = new HttpClient())
            {
                var downloadStream = await httpClient.GetStreamAsync(new Uri(url));
                if (downloadStream != null)
                {
                    await downloadStream.CopyToAsync(stream);
                }
            }

            return stream;
        }
        catch (Exception exception)
        {
            return null;
        }
    }

    public static async Task<bool> DownloadAndWriteIntoNewFile(string url,string fileName)
    {
        var stream = await DownloadFileAsStreamAsync(url);
        if (stream == null || stream.Length == 0)
            return false;

        var filePath = GetFilePath(fileName);

        if (!File.Exists(filePath))
            return false;

        File.Delete(filePath);

        // Create file.
        using (var createdFile = File.Create(filePath))
        {
        }

        // Open and write into file.
        using (var openFile = File.Open(filePath,FileMode.Open,FileAccess.ReadWrite))
        {
            stream.WriteTo(openFile);
        }

        return true;
    }

    public static string GetFilePath(string fileName)
    {
        var filePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),fileName);
        return filePath;
    }

    public static void WriteAsText(string filePath,string contents)
    {
        File.WriteAllText(filePath,contents);
    }

    public static string ReadAsText(string filePath)
    {
        return File.ReadAllText(filePath);
    }
}

您可以阅读存储的pdf文件，并使用如下所示的webview进行显示，

private async void HtmlToPDF()
{
    await FileManager.DownloadAndWriteIntoNewFile("https://www.google.co.in/?gws_rd=ssl","SavePDF.pdf");
    var filePath = FileManager.GetFilePath("SavePDF.pdf");
    var pdfString = FileManager.ReadAsText(filePath);

    var webView = new WebView
    {
        Source = new HtmlWebViewSource
        {
            Html = pdfString
        }
    };

    this.Content = webView;
}

以及下面的输出

同样，您可以将HTML保存为PDF，然后执行所需的操作。