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Export gridview data to pdf format in VB.NET

Posted by Satyapriya Nayak in Articles | ASP.NET using VB.NET on August 23, 2011

Tags: Export gridview data to pdf format in vb.net, vb.net, vb.net articles, vb.net tutorials

In this article we will know how to export gridview data to pdf format.

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Export gridview data to pdf format.rar

Reader Level: Beginner

In this article we will know how to export gridview data to pdf format. For that we need itextsharp.dll file. Get it from http://sourceforge.net/projects/itextsharp/ .

Table structure

First add the itextsharp.dll file into the application as click solution explorer- Right click on your application file-Add reference-On browse tab search the itextsharp.dll file from your computer-Click ok-Finish. Then you will notice that a Bin folder will be created where you will find itextsharp.dll file present inside that folder.

Program

Default.aspx code

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    </div>
    <asp:GridView ID="GridView1" runat="server" BackColor="#FFFF99"
        Font-Bold="True" ForeColor="Red">
        <HeaderStyle BackColor="#66FFFF" Font-Bold="True" ForeColor="#CC3300" />
        <AlternatingRowStyle BackColor="#FFCC99" />
</asp:GridView>
    <asp:Button ID="Button1" runat="server" Text="Export to Pdf" />
    </form>
</body>
</html>

Default.aspx.vb code

Imports System.Data
Imports System.Data.SqlClient
Imports iTextSharp.text.pdf
Imports iTextSharp.text.html
Imports iTextSharp.text.html.simpleparser
Imports System.IO
Imports iTextSharp.text
Partial Class _Default
    Inherits System.Web.UI.Page
    Dim strConnString As String = System.Configuration.ConfigurationManager.ConnectionStrings.Item("ConnectionString").ToString()
    Dim con As New SqlConnection(strConnString)
    Dim str As String
    Dim com As SqlCommand
    Dim sqlda As SqlDataAdapter
    Dim ds As DataSet
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        con.Open()
        str = "select * from student"
        com = New SqlCommand(Str, con)
        Dim reader As SqlDataReader
        reader = com.ExecuteReader()
        GridView1.DataSource = reader
        GridView1.DataBind()
        con.Close()
    End Sub
    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Response.Clear()
        Response.Buffer = True
        Response.ContentType = "application/pdf"
        Response.AddHeader("content-disposition", "attachment;filename=student.pdf")
        Response.Cache.SetCacheability(HttpCacheability.NoCache)
        Dim StringWriter1 As New StringWriter()
        Dim HtmlTextWriter1 As New HtmlTextWriter(StringWriter1)
        GridView1.RenderControl(HtmlTextWriter1)
        Dim StringReader1 As New StringReader(StringWriter1.ToString())
        Dim newDocument As New Document(PageSize.A4, 7.0F, 7.0F, 7.0F, 7.0F)
        Dim HTMLWorker1 As New HTMLWorker(newDocument)
        PdfWriter.GetInstance(newDocument, Response.OutputStream)
        newDocument.Open()
        HTMLWorker1.Parse(StringReader1)
        newDocument.Close()
        Response.Write(newDocument)
        Response.End()
    End Sub
    Public Overrides Sub VerifyRenderingInServerForm(ByVal control As Control
    End Sub
End Class