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Darshan Kshirasagar

Darshan Kshirasagar

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WkhtmltoPdf Page Break Not Working Properly

Apr 6 2017 2:21 AM
Hello All ,

Generate PDF using HTML string with page break is not proper working ... Below is my Code and Output

Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="wkhtmltopdfTest._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<link href="PrintStyle.css" rel="stylesheet" type="text/css" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<form id="form1" runat="server">
<asp:Button ID="Button1" runat="server" Text="Download" OnClick="btnExport_Click" />
<div >
<asp:Panel ID="pnlPerson" runat="server">
<div>
<table style="width: 785px;">
<tr>
<td>
First Page
</td>
</tr>
<tr class="page-break">
<td >
</td>
</tr>
<tr>
<td>
Second Page
</td>
</tr>
<tr class="page-break">
<td >
</td>
</tr>
<tr>
<td>
Third Page
</td>
</tr>
<tr class="page-break">
<td >
</td>
</tr>
<tr>
<td>
Fourth Page
</td>
</tr>
<tr class="page-break">
<td >
</td>
</tr>
<tr>
<td>
Five Page
</td>
</tr>
</table>
</div>
</asp:Panel>
</div>

</form>
</body>
</html>


Default.cs.aspx

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;

namespace wkhtmltopdfTest
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnExport_Click(object sender, EventArgs e)
{
try
{
string PrintStyle = System.IO.File.ReadAllText(Server.MapPath("/PrintStyle.css"));

StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);

pnlPerson.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());



string outXml = "<html> <head> " +
"<style type=\"text/css\"> " + PrintStyle + " </style> " +
"</head> <body> <div>" + sw.ToString() + " " +
" </div></body> </html>";
//table, tr, td, th, tbody, thead, tfoot { page-break-inside: avoid !important;}
//tr{display:block;}

byte[] result = ConvertHtmlToPdf(outXml);


HttpContext.Current.Response.Clear();
Response.ContentType = "application/pdf";
string outputFilename = "Report" + "_" + DateTime.Now.ToString("yyyy-MM-dd-hh-mm-ss-fff") + ".pdf";
Response.AddHeader("content-disposition", "attachment;filename=" + outputFilename);
Response.CacheControl = "No-cache";
MemoryStream ms = new MemoryStream(result);
ms.WriteTo(Response.OutputStream);
Response.Flush();
Response.SuppressContent = true;
HttpContext.Current.ApplicationInstance.CompleteRequest();

}
catch(Exception ex)
{
}
}
protected byte[] ConvertHtmlToPdf(string html)
{
System.Reflection.Assembly ass = System.Reflection.Assembly.GetExecutingAssembly();
string conPath = System.IO.Path.GetDirectoryName(ass.CodeBase);
Uri uri = new Uri(conPath);
conPath = uri.AbsolutePath.Replace("%20", " ").Replace("25", "");
conPath = Path.GetFullPath(Path.Combine(conPath, @"..\"));
conPath = conPath + "bin\\wkhtmltopdf.exe";
var p = new Process
{
StartInfo =
{
CreateNoWindow = true,
RedirectStandardOutput = true,
RedirectStandardError = true,
RedirectStandardInput = true,
UseShellExecute = false,
FileName = conPath
}
};
string s = "-q ";
s += "--margin-bottom 0 ";
s += "--margin-right 0 ";
s += "--margin-left 0 ";
s += "--margin-top 0 ";
s += "--page-size A4 ";
s += "--print-media-type ";
s += "--disable-smart-shrinking ";
s += "- -";
p.StartInfo.Arguments = s;
p.Start();
StreamWriter myStreamWriter = new StreamWriter(p.StandardInput.BaseStream, Encoding.UTF8);
myStreamWriter.Write(html);
myStreamWriter.Close();
var buffer = new byte[32768];
byte[] file;
using (var ms = new MemoryStream())
{
while (true)
{
var read = p.StandardOutput.BaseStream.Read(buffer, 0, buffer.Length);
if (read <= 0)
{
break;
}
ms.Write(buffer, 0, read);
}
file = ms.ToArray();
}
p.WaitForExit(60000);
var returnCode = p.ExitCode;
p.Close();
return returnCode == 0 ? file : null;
}
}
}


PrintStyle.css

@media print
{
tr.page-break {display: block;page-break-after: always; }
}


Output :