The number of columns in PdfPTable constructor must be greater than zero

Question

0.00/5 (No votes)

See more:

I want to save a html as PDF using ItextSharp. I am getting this error:The number of columns in PdfPTable constructor must be greater than zero.
My Code Snippet:

C#

Response.ContentType = "application/pdf";
            Response.AddHeader("content-disposition", "attachment;filename=ulcact.pdf");
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            StringWriter sw = new StringWriter();
            HtmlTextWriter hw = new HtmlTextWriter(sw);
            frmPrintHtml.RenderControl(hw);
            StringReader sr = new StringReader(sw.ToString());
            Document pdfDoc = new Document(PageSize.A2, 7f, 7f, 7f, 0f);
            HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
            PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
            pdfDoc.Open();
            htmlparser.Parse(sr);//error occrs in this line
            pdfDoc.Close();
            Response.Write(pdfDoc);
            Response.End();

Posted 21-Mar-12 17:19pm

maajanes

Updated 21-Mar-12 18:25pm

Manoj K Bhoir

v3

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

User 59241 · Answer 1 · 2012-03-21T18:39:00

Solution 1

I think your order of creation is wrong.

C#

Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=ulcact.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
frmPrintHtml.RenderControl(hw);
Document pdfDoc = new Document(PageSize.A2, 7f, 7f, 7f, 0f);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
StringReader sr = new StringReader(sw.ToString());
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
htmlparser.Parse(sr);//error should be gone
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();

Posted 21-Mar-12 18:39pm

User 59241

Comments

maajanes 22-Mar-12 1:42am

No. Same error occuring.

[no name] 22-Mar-12 9:34am

The code I posted works fine for me.
At this line..
htmlparser.Parse(sr);//error occrs in this line
..what is debugger telling you about sr?

Are you trying to pdf a gridview?

Er_Bhupendra 15-Feb-13 2:31am

i was copied your code and implement it in my project, but still i am facing the error.
The number of columns in PdfPTable constructor must be greater than zero.
the below is my code.
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=ulcact.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
this.Page.RenderControl(hw);
Document pdfDoc = new Document(PageSize.A2, 7f, 7f, 7f, 0f);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
StringReader sr = new StringReader(sw.ToString());
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
htmlparser.Parse(sr);//error should be gone
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();

Reply me as soon as possible,

Member 12072066 · Answer 2 · 2015-11-06T23:08:00

Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=ulcact.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
frmPrintHtml.RenderControl(hw);
Document pdfDoc = new Document(PageSize.A2, 7f, 7f, 7f, 0f);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
StringReader sr = new StringReader(sw.ToString());
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
htmlparser.Parse(sr);//error should be gone
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();

If You use this coding than you must remove (tr td tag ) in that your coding and compress your row and column

natarjan · Answer 3 · 2013-08-06T00:03:00

Solution 3

I think your html content have the table tag with no tr tag. Minimum one row required.

Posted 6-Aug-13 0:03am

natarjan

Comments

kavithakesavan 12-Aug-13 10:36am

Hi,

I'm facing the same issue , when i use the above code And also i added static <tr> & <td> tags jus to make sure that there should be minimum one row in a table
I used this.Page.RenderControl(hw);

Error throws in parse statement

...This error driving me nuts ..

natarjan 16-Aug-13 4:45am

Take the source code and debug it yourself or post your sample code to simulate this bug. will try to give the solution for this problem.