HOW TO
CONVERT WEBPAGE INTO PDF FILE
Here I will explain how to export webpage with images to PDF
in asp.net using iTextSharp in
c#, vb.net.
In asp.net we don’t have a direct feature to export gridview
data to PDF for that reason here I am using third party library ITextSharp
reference. First download dll from this site http://sourceforge.net/projects/itextsharp/[^]
OR
after that create one new website in visual studio and add
ITextsharp dll reference to newly created website after that write the
following code in aspx page like this
THE CODE DESIGN :
<%@ Page Language="C#"
AutoEventWireup="true"
CodeFile="WebpageToPdf.aspx.cs"
Inherits="WebpageToPdf"
EnableEventValidation="false"%>
<!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>
<title></title>
</head>
<body>
<form id="form1"
runat="server">
<div><b>Export Webpage with images to pdf using
itextsharp dll</b></div><br />
<div>
THIS IS
THE TEST IMAGE ADDED FROM INTERNET:
<div><img src="http://i328.photobucket.com/albums/l336/glamgalz/funzug/imgs/inspirational/cool_thoughts_persons_08.jpg"
/></div>
THIS IS THE TEST IMAGE ADDED FROM
WEBAPPLICATION/PC FOLDER:
<div> <img src="images/thumbs/13.jpg" /></div>
</div>
<div>
SOME
CONTENT IN WEB PAGE:
<asp:GridView ID="gvDetails"
AutoGenerateColumns="false"
CellPadding="5"
runat="server">
<Columns>
<asp:BoundField HeaderText="UserId" DataField="UserId" />
<asp:BoundField HeaderText="UserName" DataField="UserName" />
<asp:BoundField HeaderText="Education" DataField="Education" />
<asp:BoundField HeaderText="Location" DataField="Location" />
</Columns>
<HeaderStyle BackColor="#df5015" Font-Bold="true" ForeColor="White" />
</asp:GridView>
</div>
<asp:Button ID="btnPDF"
runat="server"
Text="Export to
PDF" OnClick="btnPDF_Click"/>
</form>
</body>
</html>YOU HAVE NOTICE THAT I HAVE KEPT EnableEventValidation="false" in bold due to following reason:
ERROR :
RegisterForEventValidation can only be called during
Render();
This error occurs whenever we are trying to render
control to response. To solve this problem I have added EnableEventValidation="false" to @Page directive of aspx page that should be just like this
By Setting EnableEventValidation="false" property to @Page directive of aspx page the problem has
solved automatically.
THE CODE BEHIND:
using System;
using System.Web;
using System.Web.UI;
using System.Data;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html.simpleparser;
public partial
class WebpageToPdf
: System.Web.UI.Page
{
protected void Page_Load(object
sender, EventArgs e)
{
if
(!IsPostBack)
{
BindGridview();
}
}
protected void BindGridview()
{
DataTable
dt = new DataTable();
dt.Columns.Add("UserId",
typeof(Int32));
dt.Columns.Add("UserName",
typeof(string));
dt.Columns.Add("Education",
typeof(string));
dt.Columns.Add("Location",
typeof(string));
DataRow
dtrow = dt.NewRow(); // Create New Row
dtrow["UserId"]
= 1; //Bind
Data to Columns
dtrow["UserName"]
= "PIYUSHRANA";
dtrow["Education"]
= "B.Tech";
dtrow["Location"]
= "NOIDA";
dt.Rows.Add(dtrow);
dtrow = dt.NewRow(); //
Create New Row
dtrow["UserId"]
= 2; //Bind Data to Columns
dtrow["UserName"]
= "PRAVEEN";
dtrow["Education"]
= "MBA";
dtrow["Location"]
= "MUMBAI";
dt.Rows.Add(dtrow);
dtrow = dt.NewRow(); //
Create New Row
dtrow["UserId"]
= 3; //Bind Data to Columns
dtrow["UserName"]
= "GANESH";
dtrow["Education"]
= "B.Tech";
dtrow["Location"]
= "MUMBAI";
dt.Rows.Add(dtrow);
dtrow = dt.NewRow(); //
Create New Row
dtrow["UserId"]
= 3; //Bind Data to Columns
dtrow["UserName"]
= "MAHESH";
dtrow["Education"]
= "B.Tech";
dtrow["Location"]
= "CHENNAI";
dt.Rows.Add(dtrow);
dtrow = dt.NewRow(); //
Create New Row
dtrow["UserId"]
= 3; //Bind Data to Columns
dtrow["UserName"]
= "SANDEEP";
dtrow["Education"]
= "B.Tech";
dtrow["Location"]
= "MUMBAI";
dt.Rows.Add(dtrow);
gvDetails.DataSource = dt;
gvDetails.DataBind();
}
public override void
VerifyRenderingInServerForm(Control control)
{
/* Verifies
that the control is rendered */
}
protected void btnPDF_Click(object
sender, EventArgs e)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=UserDetails.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
//if you want
to add/insert images from your folder then add the below two lines
string
imageFilePath = Server.MapPath(".")
+ "/images/thumbs/13.jpg";
iTextSharp.text.Image
png = iTextSharp.text.Image.GetInstance(imageFilePath);
StringWriter
sw = new StringWriter();
HtmlTextWriter
hw = new HtmlTextWriter(sw);
this.Page.RenderControl(hw);
StringReader
sr = new StringReader(sw.ToString());
Document
pdfDoc = new Document(PageSize.A4, 10f, 10f, 100f, 0.0f);
png.ScaleToFit(110, 110);
png.Alignment = iTextSharp.text.Image.UNDERLYING;
png.SetAbsolutePosition(480, 800);
HTMLWorker htmlparser = new
HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc,
Response.OutputStream);
pdfDoc.Open();
pdfDoc.Add(png);
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
}
}
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