public static void Run()
{
// ExStart:ChangePassword
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_AsposePdf_SecuritySignatures();
// Open document
Document document = new Document(dataDir+ "ChangePassword.pdf", "owner");
// Change password
document.ChangePasswords("owner", "newuser", "newowner");
dataDir = dataDir + "ChangePassword_out.pdf";
// Save updated PDF
document.Save(dataDir);
// ExEnd:ChangePassword
Console.WriteLine("\nPDF file password changed successfully.\nFile saved at " + dataDir);
}
}