public static byte[] GetPdfFile(string uniqueFileId)
{
string htmlFilePath = string.Format(@"{0}\{1}\{2}.html", HttpContext.Current.Server.MapPath("~"), @"PdfTemp\", uniqueFileId.ToString());
int counter = 0;
while (!File.Exists(htmlFilePath))
{
counter++;
// wait a maximum of 1 minute to see if the HTML file is ready
if (counter < 60)
{
Thread.Sleep(1000);
}
else
{
throw new Exception(string.Format("Failed to generate HTML for {0}", uniqueFileId.ToString()));
}
}
PdfOutput pdfOutput = new PdfOutput()
{
OutputFilePath = htmlFilePath.Replace(".html", ".pdf")
};
var absoultePath = System.Web.VirtualPathUtility.ToAbsolute("~/");
PdfDocument pdfDocument = new PdfDocument()
{
Url = string.Format("{0}://{1}/{2}PdfTemp/{3}.html", /*HttpContext.Current.Request.Url.Scheme*/ "http",
HttpContext.Current.Request.Url.Host,
absoultePath == "/" ? string.Empty : absoultePath,
uniqueFileId)
};
//Logging.PutInfo("pdf url: " + pdfDocument.Url);
PdfConvert.ConvertHtmlToPdf(pdfDocument, pdfOutput);
var file = File.ReadAllBytes(htmlFilePath.Replace(".html", ".pdf"));
File.Delete(htmlFilePath);
File.Delete(htmlFilePath.Replace(".html", ".pdf"));
return(file);
}
/// <summary>
/// Generates the PDF certificate.
/// </summary>
/// <param name="htmlCert">The HTML cert.</param>
/// <returns>Byte Array - containing PDF file of Certificate.</returns>
public static byte[] GeneratePdf(string htmlCert)
{
byte[] pdfFile = null;
// save the file to disk
string uniqueFileId = Guid.NewGuid().ToString();
string outputDirectoryPath = HttpContext.Current.Server.MapPath("~/PdfTemp/");
string outputFilePath = Path.Combine(outputDirectoryPath, string.Format("{0}.html", uniqueFileId));
if (!Directory.Exists(outputDirectoryPath))
{
Directory.CreateDirectory(outputDirectoryPath);
}
// save the file to disk
using (FileStream fs = new FileStream(outputFilePath, FileMode.Create))
{
using (StreamWriter ws = new StreamWriter(fs, Encoding.UTF8))
{
ws.WriteLine(htmlCert);
}
}
// wait for the file to be created
int counter = 0;
while (!File.Exists(outputFilePath))
{
counter++;
// wait a maximum of 1 minute to see if the HTML file is ready
if (counter < 60)
{
Thread.Sleep(1000);
}
else
{
throw new Exception(string.Format("Failed to generate HTML for {0}", uniqueFileId.ToString()));
}
}
// setup transport objects
PdfOutput pdfOutput = new PdfOutput
{
OutputFilePath = outputFilePath.Replace(".html", ".pdf")
};
var absoultePath = VirtualPathUtility.ToAbsolute("~/");
PdfDocument pdfDocument = new PdfDocument
{
Url = string.Format("{0}://{1}/{2}PdfTemp/{3}.html", HttpContext.Current.Request.Url.Scheme, HttpContext.Current.Request.Url.Authority, absoultePath, uniqueFileId)
};
// make call to convert
PdfConvert.ConvertHtmlToPdf(pdfDocument, pdfOutput);
pdfFile = File.ReadAllBytes(outputFilePath.Replace(".html", ".pdf"));
// clean up both files
if (File.Exists(outputFilePath))
{
File.Delete(outputFilePath);
}
if (File.Exists(outputFilePath.Replace(".html", ".pdf")))
{
File.Delete(outputFilePath.Replace(".html", ".pdf"));
}
return(pdfFile);
}
public static void ConvertHtmlToPdf(PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
if (environment == null)
{
environment = Environment;
}
String outputPdfFilePath;
bool delete;
if (woutput.OutputFilePath != null)
{
outputPdfFilePath = woutput.OutputFilePath;
delete = false;
}
else
{
outputPdfFilePath = Path.Combine(environment.TempFolderPath, String.Format("{0}.pdf", Guid.NewGuid()));
delete = true;
}
if (!File.Exists(environment.WkHtmlToPdfPath))
{
throw new PdfConvertException(String.Format("File '{0}' not found. Check if wkhtmltopdf application is installed.", environment.WkHtmlToPdfPath));
}
ProcessStartInfo si;
StringBuilder paramsBuilder = new StringBuilder();
paramsBuilder.Append("--page-size A4 ");
paramsBuilder.Append("--load-error-handling ignore ");
//paramsBuilder.Append("--redirect-delay 0 "); not available in latest version
paramsBuilder.Append("--margin-top 10 ");
paramsBuilder.Append("--margin-left 5 ");
paramsBuilder.Append("--margin-right 5 ");
paramsBuilder.Append("--margin-bottom 10 ");
if (!string.IsNullOrEmpty(document.HeaderUrl))
{
paramsBuilder.AppendFormat("--header-html {0} ", document.HeaderUrl);
paramsBuilder.Append("--margin-top 0 ");
paramsBuilder.Append("--header-spacing 0 ");
}
if (!string.IsNullOrEmpty(document.FooterUrl))
{
paramsBuilder.AppendFormat("--footer-html {0} ", document.FooterUrl);
paramsBuilder.Append("--margin-bottom 0 ");
paramsBuilder.Append("--footer-spacing 0 ");
}
//remove the border from the pages
// paramsBuilder.Append("-L 0 -R 0 -T 0 -B 0 ");
paramsBuilder.AppendFormat("\"{0}\" \"{1}\"", document.Url, outputPdfFilePath);
si = new ProcessStartInfo();
si.CreateNoWindow = true;
si.FileName = environment.WkHtmlToPdfPath;
si.Arguments = paramsBuilder.ToString();
si.UseShellExecute = false;
si.RedirectStandardError = true;
si.RedirectStandardInput = true;
si.RedirectStandardOutput = true;
try
{
using (var process = new Process())
{
process.StartInfo = si;
process.Start();
if (!process.WaitForExit(environment.Timeout))
{
throw new PdfConvertTimeoutException();
}
if (!File.Exists(outputPdfFilePath))
{
if (process.ExitCode != 0)
{
var error = si.RedirectStandardError ? process.StandardError.ReadToEnd() : String.Format("Process exited with code {0}.", process.ExitCode);
throw new PdfConvertException(String.Format("Html to PDF conversion of '{0}' failed. Wkhtmltopdf output: \r\n{1}", document.Url, error));
}
throw new PdfConvertException(String.Format("Html to PDF conversion of '{0}' failed. Reason: Output file '{1}' not found.", document.Url, outputPdfFilePath));
}
if (woutput.OutputStream != null)
{
using (Stream fs = new FileStream(outputPdfFilePath, FileMode.Open))
{
byte[] buffer = new byte[32 * 1024];
int read;
while ((read = fs.Read(buffer, 0, buffer.Length)) > 0)
{
woutput.OutputStream.Write(buffer, 0, read);
}
}
}
if (woutput.OutputCallback != null)
{
woutput.OutputCallback(document, File.ReadAllBytes(outputPdfFilePath));
}
}
}
finally
{
if (delete && File.Exists(outputPdfFilePath))
{
File.Delete(outputPdfFilePath);
}
}
}
public static void ConvertHtmlToPdf(PdfDocument document, PdfOutput output)
{
ConvertHtmlToPdf(document, null, output);
}
