Trying to export html to pdf

Dear All

I am trying to export html to pdf in following way

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html.simpleparser;
using System.IO;
using System.Collections;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}

// Below code is used to convert your string HTML value to PDF
protected void btnExportPDF_Click(object sender, EventArgs e)
{

//Set page size as A4
Document pdfDoc = new Document(PageSize.A4, 10, 10, 10, 10);

try
{
PdfWriter.GetInstance(pdfDoc, System.Web.HttpContext.Current.Response.OutputStream);

//Open PDF Document to write data
pdfDoc.Open();

//Assign Html content in a string to write in PDF
string contents = "

EXPORT HTML CONTENT TO PDF

This content is convert from html string to PDF

Samples from Ravi!!!";

//Read string contents using stream reader and convert html to parsed conent
var parsedHtmlElements = HTMLWorker.ParseToList(new StringReader(contents), null);

//Get each array values from parsed elements and add to the PDF document
foreach (var htmlElement in parsedHtmlElements)
pdfDoc.Add(htmlElement as IElement);

//Close your PDF
pdfDoc.Close();

Response.ContentType = "application/pdf";

//Set default file Name as current datetime
Response.AddHeader("content-disposition", "attachment; filename=" + DateTime.Now.ToString("yyyyMMdd") + ".pdf");
System.Web.HttpContext.Current.Response.Write(pdfDoc);

Response.Flush();
Response.End();
}
catch (Exception ex)
{
Response.Write(ex.ToString());
}
}

// Below code is read content from HTML file and convert to PDF

protected void Button1_Click(object sender, EventArgs e)
{
//Set page size as A4
Document pdfDoc = new Document(PageSize.A4, 10, 10, 10, 10);

try
{
PdfWriter.GetInstance(pdfDoc, System.Web.HttpContext.Current.Response.OutputStream);

//Open PDF Document to write data
pdfDoc.Open();

//Assign Html content in a string to write in PDF
string contents = "";

StreamReader sr;
try
{
//Read file from server path
sr = File.OpenText(Server.MapPath("sample.html"));
//store content in the variable
contents = sr.ReadToEnd();
sr.Close();
}
catch (Exception ex)
{

}

var parsedHtmlElements = HTMLWorker.ParseToList(new StringReader(contents), null);
// ArrayList parsedHtmlElements = HTMLWorker.ParseToList(new StringReader(contents), null);

//Get each array values from parsed elements and add to the PDF document
foreach (var htmlElement in parsedHtmlElements)
pdfDoc.Add(htmlElement as IElement);

//Close your PDF
pdfDoc.Close();

Response.ContentType = "application/pdf";

//Set default file Name as current datetime
Response.AddHeader("content-disposition", "attachment; filename=" + DateTime.Now.ToString("yyyyMMdd") + ".pdf");
System.Web.HttpContext.Current.Response.Write(pdfDoc);

Response.Flush();
Response.End();

}
catch (Exception ex)
{
Response.Write(ex.ToString());
}
}
}

It works fine for

following sample.html

Collapse | Copy Code

<html>
<head>
    <title></title>
</head>
<body>
    <h5>EXPORT HTML CONTENT TO PDF</h5><br /><br /><br />
    <b>This content is convert from html file to PDF file</b><br /><br /><br />
    <font color="red">Samples from Ravi!!!</font>
</body>
</html>

but gives error in following line for following html file contents

var parsedHtmlElements = HTMLWorker.ParseToList(new StringReader(contents), null);

error: Input string was not in a correct format.

contents in html file giving error

Collapse | Copy Code

<html>
<table width="300px" border="1" style="border-collapse: collapse; background-color: #E8DCFF">
        <tr>
            <td width="40px">1</td>
            <td>Number</td>
            <td><input class="txt" type="text" name="txt" /></td>
        </tr>
        <tr>
            <td>2</td>
            <td>Number</td>
            <td><input class="txt" type="text" name="txt" /></td>
        </tr>
        <tr>
            <td>3</td>
            <td>Number</td>
            <td><input class="txt" type="text" name="txt" /></td>
        </tr>
        <tr id="summation">
            <td  colspan ="2" align="right">
                Sum :
            </td>
            <td align="center"><span id="sum">0</span></td>
        </tr>
</table>
 
</html>

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sharon Thompson11y ago
Mayur refer to a following article about a .NET's approach for converting a HTML content into a PDF file.
In short the article uses the following .NET component designed for Word documents processing and it has a really easy to use interface for creating new PDF files with C#.

For example this is all that you need:

DocumentModel.Load(Server.MapPath("sample.html"))
.Save("sample.pdf");

Also just as an FYI in case you want to export the PDF file to a client's browser in ASP.NET then instead of the above save method you could use the following overload method:

DocumentModel.Load(Server.MapPath("sample.html"))
.Save(Response, "sample.pdf");
0
George eric14y ago
Hi, you may see this post on codeproject
0