Dynamically generate an HTML page for ASPX and export the Web page to PDF

1. First find the Wnvhtmlconvert.dll file and introduce it into the project.

2.server.execute ("pos.aspx?id=" + IDs); Execute the appropriate ASPX Web page

There is one such method in the 3.pos.aspx Web page that is used to generate HTML pages

protected override void Render (HtmlTextWriter writer)
{
String htmlname = "Posdemo";
String fileName = String. Empty;

String content = String. Empty;
System.IO.StringWriter StringWriter = new System.IO.StringWriter ();
HtmlTextWriter htmlwriter = new HtmlTextWriter (StringWriter);
System.IO.StreamWriter SW = null;
Try
{
Renders the contents of the current page into a temporary HtmlTextWriter object
Base. Render (HTMLWriter);
Htmlwriter.close ();
Get the full contents of the current page
Content = Stringwriter.tostring ();
FileName = HTMLName + ". html";
SW = new StreamWriter (Server.MapPath ("htm/") + FileName, false, code);
Sw. Write (str);
Sw. Flush ();
System.IO.StringWriter creaobj = new System.IO.StringWriter (Server.MapPath ("html/") + FileName, false, content);

String path = HttpContext.Current.Server.MapPath (".. /upload/");

System.Text.Encoding code = System.Text.Encoding.GetEncoding ("Utf-8");
SW = new System.IO.StreamWriter (path + fileName, false, code);
SW = new System.IO.StreamWriter (FileName, False, code);
Sw. Write (content);
Sw. Flush ();
String website = "http://" + HttpContext.Current.Request.Url.Authority;

Response.Write (content);
}
Catch {}
Finally
{
Sw. Dispose ();
Stringwriter.dispose ();
Htmlwriter.close ();
Htmlwriter.dispose ();
}

}

4. Use the following class to generate PDF bytes

public class Mypdfgenerator
{
public static byte[] Create (string surl)
{
Try
{
Pdfconverter pdfconverter = new Pdfconverter ();
Set the license key-required
Pdfconverter.licensekey = "p38cbx6aww7b9c81tjegxnrazp+j7rojs+9omj3tuycauk+clwdritm5t59hdw5r";//test key, add by Tieli

Pdfconverter.licensekey = "oyqqgzcblpebly+rgzkqj5ctj5iymjg=";
Set the converter options-optional
PdfConverter.PdfDocumentOptions.PdfPageSize = pdfpagesize.a4;
PdfConverter.PdfDocumentOptions.PdfCompressionLevel = pdfcompressionlevel.nocompression;
PdfConverter.PdfDocumentOptions.PdfPageOrientation = pdfpageorientation.portrait;
PdfConverter.PdfDocumentOptions.ShowHeader = false;
PdfConverter.PdfDocumentOptions.ShowFooter = false;
PdfConverter.PdfDocumentOptions.AutoSizePdfPage = true;
Set to generate selectable PDF or a PDF with embedded image-optional
PDFCONVERTER.PDFDOCUMENTOPTIONS.GENERATESELECTABLEPDF = true;
Set the embedded fonts option-optional, by default is False
PdfConverter.PdfDocumentOptions.EmbedFonts = false;
Enable the live HTTP links option-optional, by default is True
PdfConverter.PdfDocumentOptions.LiveUrlsEnabled = true;
Enable the languages, by default false
pdfconverter.righttoleftenabled = false;

PdfConverter.PdfDocumentInfo.AuthorName = "Telamon Global, Inc.";

Add HTML Header
if (cbaddheader.checked)
AddHeader (Pdfconverter);
Add HTML Footer
if (cbaddfooter.checked)
Addfooter (Pdfconverter);

Performs the conversion and get the PDF document bytes that can further
Save to a file or Send as a browser response
byte[] pdfbytes = pdfconverter.getpdffromurlbytes (sURL);
byte[] Pdfbytes = Pdfconverter.getpdfbytesfromhtmlfile (@ "D:\Peter\Projects\TGSAPSystem\Code\HKOMS\Web site\ Quotes\aaaa.html ");
byte[] pdfbytes = pdfconverter.getpdfbytesfromhtmlstring (HTML);

Get the HTML string for the report
StringWriter htmlstringwriter = new StringWriter ();
Server.Execute ("invoicetemplate.aspx", Htmlstringwriter);
String htmlcodetoconvert = Htmlstringwriter.getstringbuilder (). ToString ();
Htmlstringwriter.close ();

String baseUrl = Getabsoluteurl (URL);

Splendiderror.systemerror (New StackTrace (true). GetFrame (0), BASEURL);
Get the PDF bytes from HTML string
byte[] pdfbytes = pdfconverter.getpdfbytesfromhtmlstring (URL);

return pdfbytes;
}
Catch
{

return null;
}
}
}

5. Calling methods

byte[] bytes = mypdfgenerator.create (Server.MapPath (". /upload/posdemo.html "));

6. Final Export PDF

System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
Response. Clear ();
Response. AddHeader ("Content-type", "Binary/octet-stream");
Response. AddHeader ("Content-disposition",
"Attachment; Filename= "+ FileName +". pdf; Size= "+ bytes. Length.tostring ());
Response. Flush ();
Response. BinaryWrite (bytes);
Response. Flush ();
Response. End ();

Dynamically generate an HTML page for ASPX and export the Web page to PDF