Introduction
This project uses an HTML to PDF exe from ESP. Please read the GNU license agreement for more information. HTMLDOC is a desktop application to create PDF documents from a HTML page. I wrote some code to use it from a web application. The best used IS from a Web Report to Add a print to PDF Button to Use the c # class.
USING THE CODE
Public String Run (String SrawURL)
{
String sfilename = getnewname ();
String spage = server.mappath ("" sfilename ".html");
String surlvirtual = SRAWURL;
StringWriter SW = new stringwriter ();
Server.execute (SURLVIRTUAL, SW);
StreamWriter Swriter = file.createtext (spage);
Swriter.writeline (sw.toString ());
Swriter.close ();
System.Diagnostics.Process Pprocess
= New system.diagnostics.process ();
PPROCESS.STARTINFO.FILENAME = M_SDRIVE ":" m_directory
"//GHTMLDoc.exe";
PPROCESS.STARTINFO.ARGUMENTS = "--webpage --quiet" SFONTSIZE
M_SWATERMARK "--Bodyfont Arial" Slandscape
"-t pdf14 -f" sfilename ".pdf" sfilename ".html";
PPROCESS.STARTINFO.WORKINGDIRECTORY = M_SDRIVE ":" m_directory;
PPROCESS.START ();
Return (sfilename ".pdf");
}
The class PDFGenerator contains a public method called Run that will call the process hghtmldoc.exe with the arguments you choose. The most important part is to set a working directory where the Web application has permission to read, write and execute, otherwise the program won 'T Work, And The Function PPROCESS.START WILL RAISE A WIN32 Exception "Access Denied".
Streetwriter Will Save The Page Into A HTML File on The Hard Disk.The File Displaypdf.aspx and displaypdf.aspx.cs will do just what, Displays the generated pdf file when ready.
Private Void Page_Load (Object Sender, System.EventArgs E)
{
IF (Request.Params ["File"]! = null)
{
BOOL BRET = FALSE;
INT itimeout = 0;
While (Bret == false)
{
Bret = CheckiffileExist (Request.Params ["file"]. TOSTRING ());
Thread.sleep (1000);
ITimeout ;
IF (itimeout == 10)
Break;
}
IF (Bret == True)
{
Response.clearContent ();
Response.clearheaders ();
Response.ContentType = "Application / PDF";
Try
{
Response.writefile (Mappath (""
Request.Params ["file"]. TOSTRING ()));
Response.flush ();
Response.close ();
}
Catch
{
Response.clearContent ();
}
}
Else
{
IF (Request.Params ["MSG"]! = null)
{
Labelmsg.Text = Request.Params ["msg"]. Tostring ();
}
}
}
}
The page accepts a parameter, FILE, previously saved in the hard disk by StreamWriter. The Response.Redirect will include application / PDF, so the browser knows what kind of file is downloading and ask you to SAVE or OPEN. If you have Adobe plug -in installed on your browser, You'll Be Able To See the Pdf from Your Browser.
