Hi:
Well, I found some references and wrote some code. My only dilemma is, I
cannot see the text string anywhere in my PDF. Do I need something special
to be able to add this. Right now, I am referencing an existing PDF and
creating a new one. Do I need some kind of PDF editing software for this to
work?
Thanks!
Public Shared Sub AddWatermarkText(ByVal sourceFile As String, ByVal
outputFile As String, ByVal watermarkText As String)
Dim reader As iTextSharp.text.pdf.PdfReader = Nothing
Dim stamper As iTextSharp.text.pdf.PdfStamper = Nothing
Dim gstate As iTextSharp.text.pdf.PdfGState = Nothing
Dim underContent As iTextSharp.text.pdf.PdfContentByte = Nothing
Dim rect As iTextSharp.text.Rectangle = Nothing
Dim pageCount As Integer = 0
reader = New iTextSharp.text.pdf.PdfReader(sourceFile)
rect = reader.GetPageSizeWithRotation(1)
stamper = New iTextSharp.text.pdf.PdfStamper(reader, New
System.IO.FileStream(outputFile, IO.FileMode.Create))
gstate = New iTextSharp.text.pdf.PdfGState()
gstate.FillOpacity = 0.3F
gstate.StrokeOpacity = 0.3F
pageCount = reader.NumberOfPages()
Dim watermarkFont As iTextSharp.text.pdf.BaseFont =
iTextSharp.text.pdf.BaseFont.CreateFont(iTextSharp.text.pdf.BaseFont.COURIER_BOLD,
iTextSharp.text.pdf.BaseFont.CP1252,
iTextSharp.text.pdf.BaseFont.NOT_EMBEDDED)
For I As Integer = 1 To pageCount
underContent = stamper.GetUnderContent(1)
With underContent
.SaveState()
.SetGState(gstate)
.SetColorFill(iTextSharp.text.BaseColor.ORANGE)
.BeginText()
.SetFontAndSize(watermarkFont, 20)
.SetTextMatrix(30, 30)
.ShowTextAligned(iTextSharp.text.Element.ALIGN_BOTTOM,
watermarkText, rect.Width / 2, rect.Height / 2, 45.0F)
.EndText()
.RestoreState()
MessageBox.Show(watermarkText)
End With
Next
stamper.Close()
reader.Close()
End Sub
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