Export GridView to Pdf

Steps to export gridview to pdf:

1. Download the Itextsharp.dll
2. Add ItextSharp.dll reference to your project.
3. the following is the sample code for export gridview to pdf

protected void ExportToPDF(GridView gvReport, bool LandScape)
{
int noOfColumns = 0, noOfRows = 0;
DataTable tbl = null; 

if (gvReport.AutoGenerateColumns)
{
// Gets the DataSource of the GridView Control.
tbl = gvReport.DataSource as DataTable;
noOfColumns = tbl.Columns.Count;
noOfRows = tbl.Rows.Count;
}
else
{
noOfColumns = gvReport.Columns.Count;
noOfRows = gvReport.Rows.Count;
}

float HeaderTextSize = 8;
float ReportNameSize = 10;
float ReportTextSize = 8;
float ApplicationNameSize = 7;

// Creates a PDF document

Document document = null;
if (LandScape == true)
{
// Sets the document to A4 size and rotates it so that the
//   orientation of the page is Landscape.
document = new Document(PageSize.A4.Rotate(), 0, 0, 15, 5);
}
else
{
document = new Document(PageSize.A4, 0, 0, 15, 5);
}

// Creates a PdfPTable with column count of the table equal to
// no of columns of the gridview or gridview datasource.
iTextSharp.text.pdf.PdfPTable mainTable = new iTextSharp.text.pdf.PdfPTable(noOfColumns);

// Sets the first 4 rows of the table as the header
// rows which will be repeated in all the pages.
mainTable.HeaderRows = 4;

// Creates a PdfPTable with 2 columns to hold the header in the exported PDF.
iTextSharp.text.pdf.PdfPTable headerTable = new   iTextSharp.text.pdf.PdfPTable(2);

// Creates a phrase to hold the application name at the left hand side of the header.
Phrase phApplicationName = new Phrase("Sample Application", FontFactory.GetFont("Arial", ApplicationNameSize, iTextSharp.text.Font.NORMAL));

// Creates a PdfPCell which accepts a phrase as a parameter.
PdfPCell clApplicationName = new PdfPCell(phApplicationName);
// Sets the border of the cell to zero.
clApplicationName.Border = PdfPCell.NO_BORDER;
// Sets the Horizontal Alignment of the PdfPCell to left.
clApplicationName.HorizontalAlignment = Element.ALIGN_LEFT;

// Creates a phrase to show the current date at the right hand side of the header.
Phrase phDate = new Phrase(DateTime.Now.Date.ToString("dd/MM/yyyy"),
FontFactory.GetFont("Arial", ApplicationNameSize, iTextSharp.text.Font.NORMAL));

// Creates a PdfPCell which accepts the date phrase as a parameter.
PdfPCell clDate = new PdfPCell(phDate);
// Sets the Horizontal Alignment of the PdfPCell to right.
clDate.HorizontalAlignment = Element.ALIGN_RIGHT;
// Sets the border of the cell to zero.
clDate.Border = PdfPCell.NO_BORDER;

// Adds the cell which holds the application name to the headerTable.
headerTable.AddCell(clApplicationName);
// Adds the cell which holds the date to the headerTable.
headerTable.AddCell(clDate);
// Sets the border of the headerTable to zero.
headerTable.DefaultCell.Border = PdfPCell.NO_BORDER;

// Creates a PdfPCell that accepts the headerTable as
// a parameter and then adds that cell to the main PdfPTable.
PdfPCell cellHeader = new PdfPCell(headerTable);
cellHeader.Border = PdfPCell.NO_BORDER;
// Sets the column span of the header cell to noOfColumns.
cellHeader.Colspan = noOfColumns;
// Adds the above header cell to the table.
mainTable.AddCell(cellHeader);

// Creates a phrase which holds the file name.
Phrase phHeader = new Phrase("Sample Export",
FontFactory.GetFont("Arial", ReportNameSize, iTextSharp.text.Font.BOLD));
PdfPCell clHeader = new PdfPCell(phHeader);
clHeader.Colspan = noOfColumns;
clHeader.Border = PdfPCell.NO_BORDER;
clHeader.HorizontalAlignment = Element.ALIGN_CENTER;
mainTable.AddCell(clHeader);

// Creates a phrase for a new line.
Phrase phSpace = new Phrase("\n");
PdfPCell clSpace = new PdfPCell(phSpace);
clSpace.Border = PdfPCell.NO_BORDER;
clSpace.Colspan = noOfColumns;
mainTable.AddCell(clSpace);

// Sets the gridview column names as table headers.
for (int i = 0; i < noOfColumns; i++)
{
Phrase ph = null;

if (gvReport.AutoGenerateColumns)
{
ph = new Phrase(tbl.Columns[i].ColumnName,
FontFactory.GetFont("Arial", HeaderTextSize, iTextSharp.text.Font.BOLD));
}
else
{
ph = new Phrase(gvReport.Columns[i].HeaderText,
FontFactory.GetFont("Arial", HeaderTextSize, iTextSharp.text.Font.BOLD));
}

mainTable.AddCell(ph);
}

// Reads the gridview rows and adds them to the mainTable
for (int rowNo = 0; rowNo < noOfRows; rowNo++)
{
for (int columnNo = 0; columnNo < noOfColumns; columnNo++)
{
if (gvReport.AutoGenerateColumns)
{
string s = gvReport.Rows[rowNo].Cells[columnNo].Text.Trim();
Phrase ph = new Phrase(s, FontFactory.GetFont("Arial", ReportTextSize, iTextSharp.text.Font.NORMAL));
mainTable.AddCell(ph);
}
else
{
if (gvReport.Columns[columnNo] is TemplateField)
{
DataBoundLiteralControl lc = gvReport.Rows[rowNo].Cells[columnNo].Controls[0] as DataBoundLiteralControl;
string s = lc.Text.Trim();
Phrase ph = new Phrase(s, FontFactory.GetFont("Arial", ReportTextSize, iTextSharp.text.Font.NORMAL));
mainTable.AddCell(ph);
}
else
{
string s = gvReport.Rows[rowNo].Cells[columnNo].Text.Trim();
Phrase ph = new Phrase(s, FontFactory.GetFont("Arial", ReportTextSize, iTextSharp.text.Font.NORMAL));
mainTable.AddCell(ph);
}
}
}

// Tells the mainTable to complete the row even if any cell is left incomplete.
mainTable.CompleteRow();
}

// Gets the instance of the document created and writes it to
// the output stream of the Response object.
PdfWriter.GetInstance(document, Response.OutputStream);

// Creates a footer for the PDF document.
HeaderFooter pdfFooter = new HeaderFooter(new Phrase(), true);
pdfFooter.Alignment = Element.ALIGN_CENTER;
pdfFooter.Border = iTextSharp.text.Rectangle.NO_BORDER;

// Sets the document footer to pdfFooter.
document.Footer = pdfFooter;
// Opens the document.
document.Open();
// Adds the mainTable to the document.
document.Add(mainTable);
// Closes the document.
document.Close();

Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment; filename= SampleExport.pdf");
Response.End();
}