private void EncryptPDF()
{
this.EnableViewWindow();
LoadValuesFromView();
_runProgress = true;
//bckGroundProgress.RunWorkerAsync();
byte[] copiedFile = File.ReadAllBytes(_selectedFilePath);
byte[] encryptedFile = null;
using (Stream ms = new MemoryStream()) {
var document = new QPDFDocument {
InputFileBytes = copiedFile,
EncryptionPassword = _encryptedPassword
};
var output = new QPDFOutput {
OutputFilePath = _destinationFilePath
};
QPDF.ModifyPDF(document, output);
}
// Spit the copied file in memory back out..?
if (_createCopy && copiedFile != null && _destinationFilePath == _selectedFilePath)
{
// NOTE: only use the copy feature IF the new
// encrypted PDF will have the same name and path
// write the copy back into a file now the encryption has completed
string fileName = this.CreateCopyFileName(_selectedFilePath);
File.WriteAllBytes(fileName, copiedFile);
}
// message the user as the process/task/encryption has been completed
MessageBox.Show("Your PDF has now been protected with the assigned password.", "PDFMagikLITE", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.EnableViewWindow();
_runProgress = false;
//bckGroundProgress.CancelAsync();
this.DialogResult = DialogResult.OK;
this.Close();
}
private DialogResult Execute()
{
// this is the main logic
// check if we have a file, do we overwrite it
bool overwrite = false;
if (File.Exists(_destinationFilePath))
{
DialogResult confirmResult = MessageBox.Show("File exists! Would you like to overwrite the current file?", "PDF Magik - PDF Exists", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
overwrite = (confirmResult == System.Windows.Forms.DialogResult.Yes);
}
if (File.Exists(_destinationFilePath) && !overwrite)
{
return(System.Windows.Forms.DialogResult.Abort);
}
// we can continue from here!
try {
// does the source file still exist?
if (!File.Exists(_sourceFilePath))
{
MessageBox.Show("Source file cannot be found! Unable to continue.", "PDF Magik - File Not Found", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return(System.Windows.Forms.DialogResult.Cancel);
}
// check if we want to write a copy out
if (chkCreateCopy.Checked)
{
this.WriteCopyFile(_sourceFilePath, _destinationFilePath);
}
var document = new QPDFDocument(_sourceFilePath);
// setup paging
if (_pagingOption == PagingOptions.All)
{
document.Paging = new QPDFDocumentPaging();
}
else
{
document.Paging = new QPDFDocumentPaging(int.Parse(numStart.Value.ToString()), int.Parse(numEnd.Value.ToString()));
}
// setup encryption
document.Encryption = new QPDFDocumentEncryption(_encryptionOption);
document.Encryption.DecryptPassword = txtbCurrentPassword.Text;
document.Encryption.EncryptPassword = txtbNewPassword.Text;
document.Encryption.AccessibilityFeatures = chkAccessibility.Checked;
document.Encryption.TextGraphicExtraction = chkGraphicExtraction.Checked;
document.Encryption.ModificationMethod = _encryptionModifyOption;
document.Encryption.PrintMethod = _encryptionPrintOption;
// setup environment
// we are going to overoad here and allow custom QPDFPath
QPDFEnvironment environment = null;
if (!String.IsNullOrWhiteSpace(this.QPDFLocation))
{
environment = QPDF.Environment;
environment.QPDFPath = this.QPDFLocation;
}
// setup output
var output = new QPDFOutput()
{
OutputFilePath = _destinationFilePath
};
QPDF.ModifyPDF(document, environment, output);
MessageBox.Show("Process completed.", "PDF Magik - Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(System.Windows.Forms.DialogResult.OK);
}
catch (Exception ex) {
MessageBox.Show(ex.Message, "PDF Magik - Critical Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return(System.Windows.Forms.DialogResult.Cancel);
}
}
