How can I add watermark to PDF file?

VeryPDF PDF Toolbox enables you to use programming languages like C#, ASP.NET, and VB.NETto add watermarks to PDF files. If you want to view some examples of codes, please keep on reading.

C# code:
-overlay
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Call_PDFToolBoxCom
{
    class Program
    {
        static void Main(string[] args)
        {
            string strExePath = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase;
            PDFToolBoxCom.PDFToolBoxCom p = new PDFToolBoxCom.PDFToolBoxCom();
            string strReturn = p.RunCMD(strExePath + @"\in1.pdf -overlay "+ strExePath + @"\in2.pdf -outfile "+ strExePath +@"\out.pdf");
            Console.WriteLine(strReturn);
            Console.WriteLine("Please enter any key to continue...");
            Console.ReadKey();
        }
    }
}

-muloverlay
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Call_PDFToolBoxCom
{
    class Program
    {
        static void Main(string[] args)
        {
            string strExePath = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase;
            PDFToolBoxCom.PDFToolBoxCom p = new PDFToolBoxCom.PDFToolBoxCom();
            string strReturn = p.RunCMD(strExePath + @"\in1.pdf -muloverlay "+ strExePath + @"\in2.pdf -outfile "+ strExePath +@"\out.pdf");
            Console.WriteLine(strReturn);
            Console.WriteLine("Please enter any key to continue...");
            Console.ReadKey();
        }
    }
}

VB_NET code:
-overlay
Module Module1
    Sub Main()
        Dim p As PDFToolBoxCom.PDFToolBoxCom
        Dim strRet As String
        Dim strParam As String
        Dim strPath As String
        strPath = AppDomain.CurrentDomain.SetupInformation.ApplicationBase
        strParam = strPath + "pdftoolbox.exe " + strPath + "in.pdf" + " - overlay " + strPath + "in2.pdf" + " -outfile " + strPath + "out.pdf"
        Console.WriteLine(strParam)
        p = New PDFToolBoxCom.PDFToolBoxCom()
        strRet = p.RunCMD(strParam)
        Console.WriteLine(strRet)
        Console.WriteLine("Please enter any key to continue...")
        Console.ReadKey()
    End Sub
End
Module

-muloverlay
Module Module1
    Sub Main()
        Dim p As PDFToolBoxCom.PDFToolBoxCom
        Dim strRet As String
        Dim strParam As String
        Dim strPath As String
        strPath = AppDomain.CurrentDomain.SetupInformation.ApplicationBase
        strParam = strPath + "pdftoolbox.exe " + strPath + "in.pdf" + " - muloverlay " + strPath + "in2.pdf" + " -outfile " + strPath + "out.pdf"
        Console.WriteLine(strParam)
        p = New PDFToolBoxCom.PDFToolBoxCom()
        strRet = p.RunCMD(strParam)
        Console.WriteLine(strRet)
        Console.WriteLine("Please enter any key to continue...")
        Console.ReadKey()
    End Sub
End
Module

ASP_NET code:
-overlay:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace ASP_NET_Call_PDFToolBoxCom
{
    public partial class _Default : System.Web.UI.Page       
    {
        protected void Page_Load(object sender, EventArgs e)
        {}
        protected void Button1_Click(object sender, EventArgs e)
        {
            Console.WriteLine("UserName: {0}", Environment.UserName);
            PDFToolBoxCom.PDFToolBoxCom p = new PDFToolBoxCom.PDFToolBoxCom();
            string strPath = @"E:\bin\pdftoolbox.exe";
            strPath += @" in1.pdf - overlay in2.pdf -outfile out.pdf";
            string strRet = p.RunCMD(strPath);
            Response.Write(strRet);
        }
    }
}

-muloverlay:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace ASP_NET_Call_PDFToolBoxCom
{
    public partial class _Default : System.Web.UI.Page       
    {
        protected void Page_Load(object sender, EventArgs e)
        {}
        protected void Button1_Click(object sender, EventArgs e)
        {
            Console.WriteLine("UserName: {0}", Environment.UserName);
            PDFToolBoxCom.PDFToolBoxCom p = new PDFToolBoxCom.PDFToolBoxCom();
            string strPath = @"E:\bin\pdftoolbox.exe";
            strPath += @" in1.pdf - muloverlay in2.pdf -outfile out.pdf";
            string strRet = p.RunCMD(strPath);
            Response.Write(strRet);
        }
    }
}

 

______________________
Lear more: VeryPDF PDF Toolbox Component for .NET.

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