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Example 4: Encrypt a PDF file (VC#) |
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Note: Add a reference in your project to PDFsignNET
To do this:
a. On the Project menu, click Add Reference;
b. On the .NET tab, locate PDFsignNET and then click Select;
c. Click OK in the Add References dialog box to accept your selections.
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Neevia.PDFsign NVsign = new Neevia.PDFsign();
int retVal;
NVsign.PDFEncrypt = true;
NVsign.PDFEncryptionType = "rc4";
NVsign.PDFOwnerPassword = "owner";
// p - document printing is denied
// e - disable extraction of text and graphics
NVsign.PDFPermissions = "pe";
retVal = NVsign.EncryptPDF(@"c:\in.pdf",@"c:\out.pdf");
if (retVal != 0) {
MessageBox.Show("Error code = " + retVal.ToString());
} else {
MessageBox.Show("Done");
}
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