I set as references three dlls:
itextsharp.dll: the core library
itextsharp.xtra.dll: extra functionality (PDF 2!)
itextsharp.pdfa.dll: PDF/A-related functionality
This project is hosted on http://sourceforge.net/projects/itextsharp/
You can find the latest release here:
http://sourceforge.net/projects/itextsharp/files/itextsharp/
I get an error when executing this code:
On pdfDoc.Close(), "The document has no pages."
Imports iTextSharp.text
Imports iTextSharp.text.html.simpleparser
Imports iTextSharp.text.pdf
gv.DataBind()
gv.AllowPaging = "False"
Response.ContentType = "application/pdf"
Response.AddHeader("content-disposition", "attachment;filename=Export.pdf")
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Dim sw As New StringWriter()
Dim hw As New HtmlTextWriter(sw)
Dim frm As New HtmlForm()
gv.Parent.Controls.Add(frm)
frm.Attributes("runat") = "server"
frm.Controls.Add(gv)
frm.RenderControl(hw)
Dim sr As New StringReader(sw.ToString())
Dim pdfDoc As New Document(PageSize.A4, 10.0F, 10.0F, 10.0F, 0.0F)
Dim htmlparser As New HTMLWorker(pdfDoc)
PdfWriter.GetInstance(pdfDoc, Response.OutputStream)
pdfDoc.Open()
htmlparser.Parse(sr)
pdfDoc.Close()
Response.Write(pdfDoc)
Response.[End]()
The class HTMLWorker is deprecated and should no longer be used. HTML to PDF functionality has been replaced by technology called XML Worker. I see that you include itextsharp.xtra and itextsharp.pdfa which are 2 DLLs you don't need. I don't see you including the xmlworker DLL.
As for the exception: when you get the message "The document has no pages", you are trying to create a document without any content (and that doesn't make sense). How is this possible? Well, it all depends on the content of sr. That content is either empty or it contains HTML that can't be interpreted by HTMLWorker.
Extra remark: next to itextpdf.xtra, you wrote (PDF 2!). While the xtra package contains functonality that didn't exist in PDF 1.7, it's not the PDF 2 package. The PDF 2 specification is to be expected at the earliest by the end of 2015 (a more realistic estimation is 2016). At iText, we've already implemented PDF 2.0 functionality based on the draft of the spec, but that functionality is (1) not limited to what is in the xtra package, and (2) not part of a specification that has been publicly released by ISO yet.
Related
Basic principle is that I am trying to take a GridView and turn it into a PDF document. The GridView includes controls like checkboxes and some css classes with some colouring.
I have tried putting this together, but I think I am misunderstanding how something works and now hit a dead end. At present it all compiles and runs, but when you try and open the returned PDF it says it fails to load. The returned file is 1KB in size, so I am guessing that it isn't actually a valid PDF.
I am using iText7 and htmlPDF, with my code looking like this.
Protected Sub ExportToPDF(sender As Object, e As ImageClickEventArgs)
Using sw As New StringWriter()
Using hw As New HtmlTextWriter(sw)
Response.ContentType = "application/pdf"
Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.pdf")
Response.Cache.SetCacheability(HttpCacheability.NoCache)
gvCSC.DataBind()
gvCSC.RenderControl(hw)
Dim pdfWriter As New PdfWriter(Response.OutputStream)
Dim pdfDoc As New PdfDocument(pdfWriter)
Dim sr As New StringReader(sw.ToString)
pdfDoc.SetDefaultPageSize(New PageSize(PageSize.A4.Rotate))
Dim doc As Document = HtmlConverter.ConvertToDocument(sr.ToString, pdfDoc, New ConverterProperties)
Response.End()
pdfDoc.Close()
End Using
End Using
End Sub
I am hoping that I am just being stupid as I've not used iText7 before and it just needs someone to point out the obvious for me. Any help in solving this will be appreciated.
Sorry for this question, but I'm new in .net and vb.net. I really need your help! I generate a PDF file in asp.net (vb.net). It should be opened in a browser automatically, but it gives an error - Failed to load PDF document. I see it's created on a drive and opens properly. What could be an issue?
Protected Sub ExportToPDF(sender As Object, e As EventArgs)
Response.ContentType = "application/pdf"
Dim pdfDoc As New Document(PageSize.A4, 50.0F, 10.0F, 10.0F, 10.0F)
PdfWriter.GetInstance(pdfDoc, New
FileStream(Context.Server.MapPath("~/ejik.pdf"), FileMode.CreateNew))
pdfDoc.Open()
pdfDoc.Add(New Paragraph("What is going on?"))
pdfDoc.Close()
Response.Write(pdfDoc)
Response.End()
End Sub
Thank you in advance!
P.S.: Sorry, I forgot to mention that I use iTextSharp to create a PDF
Your code is all wrong. You are creating a web application, and you create an object of type Document so that you can write a PDF file to disk. (Do you even need that file on disk? You are writing a web application!) Then, instead of sending the file to the end user, you write a Document object to the Response instead of (the bytes of) the file. That can never work, can it?
It would be better if you created the PDF file in memory first:
MemoryStream ms = new MemoryStream();
PdfWriter writer = PdfWriter.GetInstance(document, ms);
document.Open();
document.Add(Assinatura());
document.Close();
Then you take the bytes of that file in memory, and send them to the Response:
byte[] bytes = ms.ToArray();
ms.Close();
Response.Clear();
Response.ContentType = "application/pdf";
Response.AddHeader("Content-Disposition", "attachment;filename=ejik.pdf");
Response.Buffer = true;
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.BinaryWrite(bytes);
Response.End();
This is what the comment meant. Instead of pdfDoc, you need to send the byte array of the PDF file. See also iTextSharp is producing a corrupt PDF with Response
I am using DevExpress ASPXPivotGrid control for my ASP.NET site.I am also using DevExpress ASPXPivotGridExporter control to ASPXPivotGrid to pdf. The problem I am having is that ASPXPivotGridExporter cannot export themes and right to left languages. Exported output always come out with default formating and just left to right languages. I would like to know if its possible to export pivot grid with theme and with rtl languages ? If not is there work around it with ITextSharp?
this what I tried so far
Response.ContentType = "application/pdf"
Response.AddHeader("content-disposition", "inline;filename=TestPage.pdf")
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Dim sw As New StringWriter()
Dim hw As New HtmlTextWriter(sw)
ASPXPivotGrid1.RenderControl(hw)
Dim sr As New StringReader(sw.ToString())
Dim pdfDoc As New Document(PageSize.A4, 10.0F, 10.0F, 100.0F, 0.0F)
Dim htmlparser As New HTMLWorker(pdfDoc)
PdfWriter.GetInstance(pdfDoc, Response.OutputStream)
pdfDoc.Open()
htmlparser.Parse(sr)
Using memoryStream As New MemoryStream
Chart1.SaveImage(memoryStream, ChartImageFormat.Png)
Dim img As Image = Image.GetInstance(memoryStream.GetBuffer())
img.ScalePercent(75.0F)
pdfDoc.Add(img)
End Using
pdfDoc.Close()
Response.Write(pdfDoc)
Response.[End]()
using aspxpivotgridexporter doesn't support right to left languages. but finally i was able to find a work around by exporting pivot grid to html using pivot grid exporter then I can add the needed styles to the resulting html file and adding the direction to the text wither rtl or ltr
So I saw this tutorial in codeproject http://www.codeproject.com/Articles/20640/Creating-PDF-Documents-in-ASP-NET. I used the itextsharp in my web project
Dim doc As Document = New Document
PdfWriter.GetInstance(doc, New FileStream("C:\Users\PC\Desktop" + _
"\1.pdf", FileMode.Create))
doc.Open()
doc.Add(New Paragraph("Hello World"))
doc.Close()
Response.Redirect("~/1.pdf")
with this syntax I get errors that 'myProjectName.Document' cannot be converted to 'iTextSharp.text.Document'and open, add ,close is not a member of 'myProjectName.Document'
My current framework is 3.5 . I have downloaded the sample project it was framework 2.0 but can still run when I changed it to 3.5,
Any workaround with my problem?
Looks like your Document is coming from some other namespace, try specifying the namespace explicitly:
dim doc as iTextSharp.text.Document = new iTextSharp.text.Document() 'may need parameters to constructor
I have an ASP.NET page like this:
http://farm4.static.flickr.com/3631/3690714302_c17b259863.jpg
My table is Gridview and some Label, anybody can tell me how to create a button to convert my page to image or PDF file and save it to desktop.
It can be done by code on the backend that renders the html into a memory Graphic object and then serves that resultant bitmap back, or by printing the page (on the server) through a PDF writer and then capturing the result.
Javascript, no.
Or google "online convert html pdf" and use one of those services.
Hai use iTextSharp to convert your webpage to pdf.
It looks very nice.
Just download the dll file and add reference to your application.
Then in button click give the coding as follows.
Response.ClearHeaders()
Response.ContentType = "application/pdf"
Response.AddHeader("content-disposition", attachment; filename="jaison.pdf")
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Dim sw As New StringWriter()
Dim hw As New HtmlTextWriter(sw)
Me.Page.RenderControl(hw)
Dim sr As New StringReader(sw.ToString())
Dim pdfDoc As New Document(iTextSharp.text.PageSize.A2, 10, 10, 10, 10)
Dim htmlparser As New HTMLWorker(pdfDoc)
PdfWriter.GetInstance(pdfDoc, Response.OutputStream)
pdfDoc.Open()
htmlparser.Parse(sr)
pdfDoc.Close()
Response.Write(pdfDoc)
Response.End()
Surely this code will help you.
All the best!