ASP.NET is an open-source server-side web application framework designed for web development to produce dynamic web pages developed by Microsoft to allow programmers to build dynamic websites, applications and services.
iTextSharp (now iText) is a library for creating and manipulating PDF files in Java and .NET. iText was written by Bruno Lowagie. The source code was initially distributed as open source under the Mozilla Public License.
This article will show you how to convert ASP.NET GridView control to pdf at runtime using itextsharp which is available in the itextsharp namespace. There are several libraries available but In C#, use Itextsharp to create PDFs. By using the itextsharp library you can create PDF report from the database or also you can integrate this library in other Microsoft project like MVC and .NET core easily
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Pdf.aspx.cs" Inherits="Pdf" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server">
</asp:GridView>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Pdf" /></div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using iTextSharp.text;
using iTextSharp.text.pdf;
using System.IO;
using iTextSharp.text.html;
public partial class Pdf : MyPage
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GridView1.DataSource = GetData();
GridView1.DataBind();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
MyPage tmpPage = new MyPage();
HtmlForm form = new HtmlForm();
form.Controls.Add(GridView1);
tmpPage.Controls.Add(form);
StringWriter sw = new StringWriter();
HtmlTextWriter htmlWriter = new HtmlTextWriter(sw);
form.Controls[0].RenderControl(htmlWriter);
string htmlContent = sw.ToString();
Document document = new Document();
// step 2:
// we create a writer that listens to the document
// and directs a PDF-stream to a file
PdfWriter.GetInstance(document, new FileStream("c:\\Chap0101.pdf", FileMode.Create));
// step 3: we open the document
document.Open();
// step 4: we add a paragraph to the document
//document.Add(new Paragraph(htmlContent.ToString()));
System.Xml.XmlTextReader _xmlr = new System.Xml.XmlTextReader(new StringReader(htmlContent));
HtmlParser.Parse(document, _xmlr);
// step 5: we close the document
document.Close();
ShowPdf("c:\\Chap0101.pdf");
}
private void ShowPdf(string s)
{
Response.ClearContent();
Response.ClearHeaders();
Response.AddHeader("Content-Disposition", "inline;filename=" + s);
Response.ContentType = "application/pdf";
Response.WriteFile(s);
Response.Flush();
Response.Clear();
}
public DataSet GetData()
{
DataSet ds = new DataSet();
DataTable dt = new DataTable("Product");
DataRow dr;
dt.Columns.Add(new DataColumn("Price", typeof(Int32)));
dt.Columns.Add(new DataColumn("DisCount", typeof(Int32)));
dt.Columns.Add(new DataColumn("SellPrice", typeof(Int32)));
for (int i = 1; i <= 10; i++)
{
dr = dt.NewRow();
dr[0] = i;
dr[1] = i * 2;
dr[2] = 1 * 3;
dt.Rows.Add(dr);
}
ds.Tables.Add(dt);
Session["dt"] = dt;
return ds;
}
}
Create a new clas Mypage.cs in app_code folder.
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
/// <summary>
/// Summary description for MyPage
/// </summary>
public class MyPage : Page
{
public override void VerifyRenderingInServerForm(Control control)
{
GridView grid = control as GridView;
if (grid != null && grid.ID == "GridView1")
return;
else
base.VerifyRenderingInServerForm(control);
}
}
