How to add a watermark in PDF using C# and .NET
Complete code
using System;
using System.IO;
using System.Collections;
namespace Sample
{
class Test
{
static void Main(string[] args)
{
// Before starting, we recommend to get a free 100-day key:
// https://sautinsoft.com/start-for-free/
// Apply the key here:
// SautinSoft.PdfMetamorphosis.SetLicense("...");
SautinSoft.PdfMetamorphosis p = new SautinSoft.PdfMetamorphosis();
SautinSoft.PdfMetamorphosis.WaterMark w1 = new SautinSoft.PdfMetamorphosis.WaterMark(@"..\..\..\WaterMark.png");
w1.PosX.Mm = 0;
w1.PosX.Mm = 0;
w1.PosDX.Mm = 50;
w1.PosDY.Mm = 50;
p.WaterMarks.Add(w1);
if (p != null)
{
string rtfPath = @"..\..\..\example.rtf";
string pdfPath = Path.ChangeExtension(rtfPath, ".pdf");
int i = p.RtfToPdfConvertFile(rtfPath, pdfPath);
if (i != 0)
{
System.Console.WriteLine("An error occurred during converting RTF to PDF!");
}
else
{
System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(pdfPath) { UseShellExecute = true });
}
}
}
}
}
Module sample
Sub Main()
' Before starting, we recommend to get a free 100-day key:
' https://sautinsoft.com/start-for-free/
' Apply the key here:
' SautinSoft.PdfMetamorphosis.SetLicense("...");
Dim p As New SautinSoft.PdfMetamorphosis()
Dim w1 As New SautinSoft.PdfMetamorphosis.WaterMark("..\..\..\WaterMark.png")
w1.PosX.Mm = 0
w1.PosX.Mm = 0
w1.PosDX.Mm = 50
w1.PosDY.Mm = 50
p.WaterMarks.Add(w1)
If p IsNot Nothing Then
Dim rtfPath As String = "..\..\..\example.rtf"
Dim pdfPath As String = "..\..\..\test.pdf"
Dim i As Integer = p.RtfToPdfConvertFile(rtfPath, pdfPath)
If i <> 0 Then
System.Console.WriteLine("An error occurred during converting RTF to PDF!")
Else
System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(pdfPath) With {.UseShellExecute = True})
End If
End If
End Sub
End Module
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