PDF Encryption
GemBox.Spreadsheet is a .NET component that enables developers to read, write, convert and print spreadsheet files (XLSX, XLS, ODS, CSV, HTML, PDF or XPS) from their .NET applications using one simple API. GemBox.Spreadsheet Free is free of charge while GemBox.Spreadsheet Professional is a commercial version licensed per developer.
PDF encryption enables you to securely protect the content of your PDF file from unwanted viewers and against unwanted actions like printing, selecting text, etc.
Following example shows how to convert any workbook to encrypted PDF file with restricted permissions which requires a password to be decrypted, viewed and, optionally, modified.
Password and owner password should be specified in the appropriate text box.
Screenshot
See the full code below, use RUN EXAMPLE to execute.
1using GemBox.Spreadsheet;
2using System.IO;
3
4class Sample
5{
6 [STAThread]
7 static void Main(string[] args)
8 {
9 // If using Professional version, put your serial key below.
10 SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY");
11
12 ExcelFile ef = ExcelFile.Load("SimpleTemplate.xlsx");
13
14 string password = "pass";
15 string ownerPassword = "";
16
17 var options = new PdfSaveOptions()
18 {
19 DocumentOpenPassword = password,
20 PermissionsPassword = ownerPassword,
21 Permissions = PdfPermissions.None
22 };
23
24 ef.Save("PDF Encryption.pdf", options);
25 }
26}
1Imports GemBox.Spreadsheet
2Imports System.IO
3
4Module Samples
5
6 Sub Main()
7
8 ' If using Professional version, put your serial key below.
9 SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY")
10
11 Dim ef As ExcelFile = ExcelFile.Load("SimpleTemplate.xlsx")
12
13 Dim password As String = "pass"
14 Dim ownerPassword As String = ""
15
16 Dim options = New PdfSaveOptions() With
17 {
18 .DocumentOpenPassword = password,
19 .PermissionsPassword = ownerPassword,
20 .Permissions = PdfPermissions.None
21 }
22
23 ef.Save("PDF Encryption.pdf", options)
24
25 End Sub
26
27End Module
Check next sample or find out more about GemBox.Spreadsheet and GemBox Software.