Generate PDF documents from a HTML page using ASP. NET

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

 

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 limit 14-F "   + Sfilename +   " . PDF "   + Sfilename +   " . Html " ;
Pprocess. startinfo. workingdirectory = M_sdrive +   " : "   + M_directory;

Pprocess. Start ();

Return(Sfilename+ ". PDF");
}

 

The class generator 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 ".

Streamwriter will save the page into a HTML file on the hard disk.

The file displaypdf. aspx and displaypdf. aspx. CS will do just that, displays the generated PDF file when ready.

 

Code
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, previusly 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.

Here is the original link,

Http://www.codeproject.com/KB/aspnet/HTML2PDF.aspx