private async void cmdSaveAsPdf_Click(object sender, EventArgs e)
{
try
{
CursorWait objCursorWait = await CursorWait.NewAsync(this, token : _objGenericToken);
try
{
try
{
// Check to see if we have any "Print to PDF" printers, as they will be a lot more reliable than wkhtmltopdf
string strPdfPrinter = string.Empty;
foreach (string strPrinter in PrinterSettings.InstalledPrinters)
{
if (strPrinter == "Microsoft Print to PDF" || strPrinter == "Foxit Reader PDF Printer" ||
strPrinter == "Adobe PDF")
{
strPdfPrinter = strPrinter;
break;
}
}
if (!string.IsNullOrEmpty(strPdfPrinter))
{
DialogResult ePdfPrinterDialogResult = Program.ShowMessageBox(this,
string.Format(GlobalSettings.CultureInfo,
await LanguageManager.GetStringAsync("Message_Viewer_FoundPDFPrinter"),
strPdfPrinter),
await LanguageManager.GetStringAsync("MessageTitle_Viewer_FoundPDFPrinter"),
MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information);
switch (ePdfPrinterDialogResult)
{
case DialogResult.Cancel:
case DialogResult.Yes when await DoPdfPrinterShortcut(strPdfPrinter):
return;
case DialogResult.Yes:
Program.ShowMessageBox(this,
await LanguageManager.GetStringAsync(
"Message_Viewer_PDFPrinterError"));
break;
}
}
}
// This exception type is returned if PrinterSettings.InstalledPrinters fails
catch (Win32Exception)
{
//swallow this
}
// Save the generated output as PDF.
SaveFileDialog1.Filter = await LanguageManager.GetStringAsync("DialogFilter_Pdf") + '|' +
await LanguageManager.GetStringAsync("DialogFilter_All");
SaveFileDialog1.Title = await LanguageManager.GetStringAsync("Button_Viewer_SaveAsPdf");
SaveFileDialog1.ShowDialog();
string strSaveFile = SaveFileDialog1.FileName;
if (string.IsNullOrEmpty(strSaveFile))
{
return;
}
if (!strSaveFile.EndsWith(".pdf", StringComparison.OrdinalIgnoreCase))
{
strSaveFile += ".pdf";
}
if (!Directory.Exists(Path.GetDirectoryName(strSaveFile)) || !Utils.CanWriteToPath(strSaveFile))
{
Program.ShowMessageBox(this,
string.Format(GlobalSettings.CultureInfo,
await LanguageManager.GetStringAsync(
"Message_File_Cannot_Be_Accessed"), strSaveFile));
return;
}
if (!await Utils.SafeDeleteFileAsync(strSaveFile, true, token: _objGenericToken))
{
Program.ShowMessageBox(this,
string.Format(GlobalSettings.CultureInfo,
await LanguageManager.GetStringAsync(
"Message_File_Cannot_Be_Accessed"), strSaveFile));
return;
}
// No PDF printer found, let's use wkhtmltopdf
try
{
PdfDocument objPdfDocument = new PdfDocument
{
Html = webViewer.DocumentText,
ExtraParams = new Dictionary <string, string>(8)
{
{ "encoding", "UTF-8" },
{ "dpi", "300" },
{ "margin-top", "13" },
{ "margin-bottom", "19" },
{ "margin-left", "13" },
{ "margin-right", "13" },
{ "image-quality", "100" },
{ "print-media-type", string.Empty }
}
};
PdfConvertEnvironment objPdfConvertEnvironment = new PdfConvertEnvironment
{
WkHtmlToPdfPath = Path.Combine(Utils.GetStartupPath, "wkhtmltopdf.exe")
};
PdfOutput objPdfOutput = new PdfOutput {
OutputFilePath = strSaveFile
};
await PdfConvert.ConvertHtmlToPdfAsync(objPdfDocument, objPdfConvertEnvironment, objPdfOutput);
if (!string.IsNullOrWhiteSpace(GlobalSettings.PdfAppPath))
{
Uri uriPath = new Uri(strSaveFile);
string strParams = GlobalSettings.PdfParameters
.Replace("{page}", "1")
.Replace("{localpath}", uriPath.LocalPath)
.Replace("{absolutepath}", uriPath.AbsolutePath);
ProcessStartInfo objPdfProgramProcess = new ProcessStartInfo
{
FileName = GlobalSettings.PdfAppPath,
Arguments = strParams,
WindowStyle = ProcessWindowStyle.Hidden
};
objPdfProgramProcess.Start();
}
}
catch (Exception ex)
{
Program.ShowMessageBox(this, ex.ToString());
}
}
finally
{
await objCursorWait.DisposeAsync();
}
}
catch (OperationCanceledException)
{
//swallow this
}
}