positioning text using itextSharp in C3 - itext

Question

I am trying to generate a pdf on button click. I am having challenge to design the page. If anybody can help on, how to position the text in particular position.
Say I want my address to in the top right corner and heading in the center.
Here is the code I am working on:
private void pdf_btn_Click(object sender, EventArgs e)
{
SaveFileDialog svg = new SaveFileDialog();
svg.ShowDialog();
using (FileStream stream = new FileStream(svg.FileName + ".pdf", FileMode.Create))
{
// Create a Document object
var document = new Document(PageSize.A4, 50, 50, 25, 25);
// Create a new PdfWrite object, writing the output to a MemoryStream
// var output = new MemoryStream();
var writer = PdfWriter.GetInstance(document, stream);
document.Open();
// First, create our fonts... (For more on working w/fonts in iTextSharp, see: http://www.mikesdotnetting.com/Article/81/iTextSharp-Working-with-Fonts
var titleFont = FontFactory.GetFont("Arial", 18, Convert.ToInt32(Font.Bold));
var AddressFont = FontFactory.GetFont("Arial", 7, Convert.ToInt32(Font.Bold));
var boldTableFont = FontFactory.GetFont("Arial", 12, Convert.ToInt32(Font.Bold));
var endingMessageFont = FontFactory.GetFont("Arial", 10, Convert.ToInt32(Font.Italic));
var bodyFont = FontFactory.GetFont("Arial", 12);
// Add the "" title
document.Add(new Paragraph("Certificate of Analysis", titleFont));
// Add Address
var text = document.Add(new Paragraph("Abc Company", AddressFont));
document.Add(new Paragraph("Tel:(xx) xxx-xxxx, (xxx) xxx-xxx", AddressFont));
document.Add(new Paragraph("Fax: (xxx) xxx-xxx, , AddressFont));
document.Close();
stream.Close();
}
}

Answer 1

There are different ways to achieve what you want.
Currently, you are telling iText to do the layout. If you want to center the text "Certificate of Analysis", then you could change the alignment of the Paragraph like this:
Paragraph header = new Paragraph("Certificate of Analysis", titleFont);
header.Alignment = Element.ALIGN_CENTER;
document.Add(header);
If you want the text "Abc Company" to be right-aligned, you can change he alignment like this:
Paragraph company = new Paragraph("Abc Company", AddressFont);
company.Alignment = Element.ALIGN_RIGHT;
document.Add(company);
Of course: when we add company, it will start on a new line under header. Maybe you want the text to be on the same line.
In that case, why not use a PdfPTable?
PdfPTable myTable = new PdfPTable(3);
myTable.WidthPercentage = 100;
PdfPCell mydate = new PdfPCell(new Phrase("April 22, 2015", myfont));
mydate.Border = Rectangle.NO_BORDER;
myTable.AddCell(mydate);
PdfPCell header = new PdfPCell(new Phrase("Certificate of Analysis", titleFont));
header.Border = Rectangle.NO_BORDER;
header.HorizontalAlignment = Element.ALIGN_CENTER;
myTable.AddCell(header);
PdfPCell address = new PdfPCell(new Phrase("Company Address", AddressFont));
address.Border = Rectangle.NO_BORDER;
address.HorizontalAlignment = Element.ALIGN_RIGHT;
myTable.AddCell(address);
doc.Add(myTable);
Now the available width of your page will be divided in three, the date will be aligned to the left, the header will be centered, and the address will be aligned to the right. Obviously, you can add more data to a PdfPCell and more rows to the PdfPTable. This is just a simple proof of concept.
Another option, is to add the text at an absolute position (using coordinates). This can be done by using the ColumnText object. There are plenty of examples on this in The Best iText Questions on StackOverflow