C# Winform export to PDF

[Booney440]

I have created a small app to try and understand how to export Images to pdf. The code below exports but the PDF is blank.

I have 2 columns ID and Image.


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace TestImage
{
public partial class Form1 : Form
{

public Form1()
{
InitializeComponent();
}


//browse image into pictureBox1
private void BtnBrowseImage_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "Choose Image(*.jpg;*.png;*.gif)|*.jpg;*.png;*.gif";

if (ofd.ShowDialog() == DialogResult.OK)
{
pictureBox1.Image = System.Drawing.Image.FromFile(ofd.FileName);
}

}

//button add data to dataGridView
//insert image from pictureBox to dataGridView

private void BtnAdd_Click(object sender, EventArgs e)
{
try
{
MemoryStream ms = new MemoryStream();
pictureBox1.Image.Save(ms, pictureBox1.Image.RawFormat);
byte[] img = ms.ToArray();
dataGridView1.Rows.Add(textBoxId.Text, img);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}

}

private void Form1_Load(object sender, EventArgs e)
{
//create a DataGridView Image Column
DataGridViewImageColumn dgvImage = new DataGridViewImageColumn();
//set a header test to DataGridView Image Column
dgvImage.HeaderText = "Image";
dgvImage.ImageLayout = DataGridViewImageCellLayout.Stretch;

DataGridViewTextBoxColumn dgvId = new DataGridViewTextBoxColumn();
dgvId.HeaderText = "Id";

dataGridView1.Columns.Add(dgvId);
dataGridView1.Columns.Add(dgvImage);

dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
dataGridView1.RowTemplate.Height = 120;

dataGridView1.AllowUserToAddRows = false;

}

private void btn_Export_Click(object sender, EventArgs e)
{
if (dataGridView1.Rows.Count > 0)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "PDF (*.pdf)|*.pdf";
sfd.FileName = "Output.pdf";
bool fileError = false;
if (sfd.ShowDialog() == DialogResult.OK)
{
if (File.Exists(sfd.FileName))
{
try
{
File.Delete(sfd.FileName);
}
catch (IOException ex)
{
fileError = true;
MessageBox.Show("It wasn't possible to write the data to the disk." + ex.Message);
}
}
if (!fileError)
{
try
{
PdfPTable pdfTable = new PdfPTable(dataGridView1.Columns.Count);
pdfTable.DefaultCell.Padding = 3;
pdfTable.WidthPercentage = 100;
pdfTable.HorizontalAlignment = Element.ALIGN_LEFT;

foreach (DataGridViewColumn column in dataGridView1.Columns)
{
PdfPCell cell = new PdfPCell(new Phrase(column.HeaderText));
pdfTable.AddCell(cell);
}


////Option 2
foreach (DataGridViewRow row in dataGridView1.Rows)
{
string Id = row.Cells[0].Value.ToString();
// Now your image cell
byte[] imageByte = (byte[])row.Cells[1].Value;
iTextSharp.text.Image myImage = iTextSharp.text.Image.GetInstance(imageByte);
pdfTable.AddCell(myImage);

}

//Stop Option 2


using (FileStream stream = new FileStream(sfd.FileName, FileMode.Create))
{
Document pdfDoc = new Document(PageSize.A4, 10f, 20f, 20f, 10f);
PdfWriter.GetInstance(pdfDoc, stream);
pdfDoc.Open();
pdfDoc.Add(pdfTable);
pdfDoc.Close();
stream.Close();
}

MessageBox.Show("Data Exported Successfully !!!", "Info");
}
catch (Exception ex)
{
MessageBox.Show("Error :" + ex.Message);
}
}
}
}
else
{
MessageBox.Show("No Record To Export !!!", "Info");
}
}
}
}





Booney440

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