I want to remove water mark existing pdf using C#

I want to remove water mark existing pdf using c#.

Customer
----------------------------------------

Thanks for your message, you can use "PDF Text Replacer Command Line" to remove text watermark from PDF pages easily, please look at following web page for more information,

http://www.verypdf.com/wordpress/201308/how-to-remove-watermarks-from-existing-pdf-programmatically-37935.html

You can also call pdftr.exe from C# code to batch remove text watermark from PDF pages, for example,

using System.Diagnostics;

class Program
{
    static void Main()
    {
        LaunchCommandLineApp();
    }
   
    /// <summary>
    /// Launch the legacy application with some options set.
    /// </summary>
    static void LaunchCommandLineApp()
    {
        // Use ProcessStartInfo class
        ProcessStartInfo startInfo = new ProcessStartInfo();
        startInfo.CreateNoWindow = false;
        startInfo.UseShellExecute = false;
        startInfo.WindowStyle = ProcessWindowStyle.Hidden;
        startInfo.FileName = "D:\\VeryPDF\\pdftr.exe";
        startInfo.Arguments = "-contentreplace \"watermark=> \" D:\\in.pdf D:\\out.pdf";
       
        try
        {
            // Start the process with the info we specified.
            // Call WaitForExit and then the using statement will close.
            using (Process exeProcess = Process.Start(startInfo))
            {
                exeProcess.WaitForExit();
            }
        }
        catch
        {
            // Log error.
        }
    }
}

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