Adding header and footer and aslo page number to pdf

In my application i'm exporting datatable data to pdf using itextsharp its working fine now i want to add header and footer to it and aslo i want to add page number to it and aslo i want the header to contain name as report in all the page.How can i do that
i have written the code like this:
public void ExportToPdf(DataTable ExDataTable)
{

//Here set page size as A4

Document pdfDoc = new Document(PageSize.A4, 10, 10, 10, 10);

try

{

PdfWriter.GetInstance(pdfDoc, System.Web.HttpContext.Current.Response.OutputStream);

pdfDoc.Open();

//Set Font Properties for PDF File

Font fnt = FontFactory.GetFont("Times New Roman", 6);

DataTable dt = ExDataTable;

if (dt != null)

{

PdfPTable PdfTable = new PdfPTable(dt.Columns.Count);

PdfPCell PdfPCell = null;

//Here we create PDF file tables

for (int rows = 0; rows < dt.Rows.Count; rows++)
{

if (rows == 0)

{

for (int column = 0; column < dt.Columns.Count; column++)

{

PdfPCell = new PdfPCell(new Phrase(new Chunk(dt.Columns[column].ColumnName.ToString(), fnt)));

PdfTable.AddCell(PdfPCell);

}

}

for (int column = 0; column < dt.Columns.Count; column++)

{

PdfPCell = new PdfPCell(new Phrase(new Chunk(dt.Rows[rows][column].ToString(), fnt)));

PdfTable.AddCell(PdfPCell);

}

}

// Finally Add pdf table to the document
pdfDoc.Add(PdfTable);

}

pdfDoc.Close();

Response.ContentType = "application/pdf";

//Set default file Name as current datetime
Response.AddHeader("content-disposition", "attachment; filename=" + "Line-Shift Report" + ".pdf");

System.Web.HttpContext.Current.Response.Write(pdfDoc);

Response.Flush();

Response.End();

}

catch (Exception ex)

{

Response.Write(ex.ToString());

}

}
protected void Button1_Click1(object sender, EventArgs e) {
if (Session["source_table"] != null)

{

ExportToPdf(Session["source_table"] as DataTable);

}

else
{

Response.Write("No data to Export!");

}

}
Can any1 help me on this