How to make a password in the resulting PDF using C# and .NET


This code example shows how to convert xlsx file to a password-protected PDF file.

Complete code

using System;
using System.IO;
using SautinSoft;

namespace Sample
{
    class Sample
    {
        static void Main(string[] args)
        {
            // Make a password in resulting PDF
            ExcelToPdf x = new ExcelToPdf();

            // Set PDF as output format.
            x.OutputFormat = SautinSoft.ExcelToPdf.eOutputFormat.Pdf;

            // Set the password for PDF.
            x.Options.PdfSecurity.EncryptionAlgorithm = ExcelToPdf.PdfEncryptionAlgorithm.RC4_128;
            x.Options.PdfSecurity.Permissions = ExcelToPdf.PdfPermissions.Printing;
            x.Options.PdfSecurity.UserPassword = "123456";
            // The password cannot be in PDF-A. Change to PDF 1.5.
            x.Options.PdfVersion = ExcelToPdf.COptions.ePdfVersion.PDF_15;

            string excelFile = Path.GetFullPath(@"..\..\..\test.xlsx");
            string pdfFile = Path.ChangeExtension(excelFile, ".pdf"); ;

            try
            {
                x.ConvertFile(excelFile, pdfFile);
                System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(pdfFile) { UseShellExecute = true });
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                Console.ReadLine();
            }
        }
    }
}

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Imports System
Imports System.IO
Imports SautinSoft

Module Sample

    Sub Main()
        ' Make a password in resulting PDF
        Dim x As New ExcelToPdf()

        ' Set PDF as output format.
        x.OutputFormat = SautinSoft.ExcelToPdf.eOutputFormat.Pdf

        ' Set the password for PDF.
        x.Options.PdfSecurity.EncryptionAlgorithm = ExcelToPdf.PdfEncryptionAlgorithm.RC4_128
        x.Options.PdfSecurity.Permissions = ExcelToPdf.PdfPermissions.Printing
        x.Options.PdfSecurity.UserPassword = "123456"
        ' The password cannot be in PDF-A. Change to PDF 1.5.
        x.Options.PdfVersion = ExcelToPdf.COptions.ePdfVersion.PDF_15

        Dim excelFile As String = Path.GetFullPath("..\..\..\test.xlsx")
        Dim pdfFile As String = Path.ChangeExtension(excelFile, ".pdf")

        Try
            x.ConvertFile(excelFile, pdfFile)
            System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(pdfFile) With {.UseShellExecute = True})
        Catch ex As Exception
            Console.WriteLine(ex.Message)
            Console.ReadLine()
        End Try
    End Sub
End Module

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