protected void ClickToDecrypt_Click(object sender, EventArgs e)
{
if (this.FileUpload2.HasFile)
{
string fileName = Path.GetFileNameWithoutExtension(this.FileUpload2.PostedFile.FileName);
string ext = Path.GetExtension(this.FileUpload2.PostedFile.FileName).ToLower();
if (ext == ".pptx")
{
Stream readFile = this.FileUpload2.PostedFile.InputStream;
try
{
//Opens the specified file
IPresentation presentation = Presentation.Open(readFile, txtDeOpen.Text);
//Decrypts the document
presentation.RemoveEncryption();
//Saving the presentation
presentation.Save("Decryption.pptx", FormatType.Pptx, Response);
}
catch (Exception)
{
this.label1.Text = "Please check the password";
}
}
}
}
public ActionResult EncryptAndDecrypt(string Group1, string Group2)
{
string basePath = _hostingEnvironment.WebRootPath;
FileStream fileStreamInput = new FileStream(basePath + @"/Presentation/Syncfusion Presentation.pptx", FileMode.Open, FileAccess.Read);
if (Group1 == "CreateEncryptDoc")
{
IPresentation presentation = Presentation.Open(fileStreamInput);
presentation.Encrypt("syncfusion");
MemoryStream ms = new MemoryStream();
//Saves the presentation to the memory stream.
presentation.Save(ms);
//Set the position of the stream to beginning.
ms.Position = 0;
return(File(ms, "application/vnd.openxmlformats-officedocument.presentationml.presentation", "Encryption.pptx"));
}
else
{
IPresentation presentation = Presentation.Open(fileStreamInput);
presentation.RemoveEncryption();
MemoryStream ms = new MemoryStream();
//Saves the presentation to the memory stream.
presentation.Save(ms);
//Set the position of the stream to beginning.
ms.Position = 0;
//Initialize the file stream to download the presentation.
FileStreamResult fileStreamResult = new FileStreamResult(ms, "application/vnd.openxmlformats-officedocument.presentationml.presentation");
//Set the file name.
fileStreamResult.FileDownloadName = "Decryption.pptx";
return(fileStreamResult);
}
}
/// <summary>
/// Encrypts and decrypts the presentation.
/// </summary>
private void BtnCreatePresn_Click(object sender, Microsoft.UI.Xaml.RoutedEventArgs e)
{
string fileName;
//Gets the input PowerPoint Presentation file.
Assembly assembly = typeof(EncryptAndDecrypt).GetTypeInfo().Assembly;
string resourcePath = "syncfusion.presentationdemos.winui.Assets.Presentation.SyncfusionPresentation.pptx";
using Stream fileStream = assembly.GetManifestResourceStream(resourcePath);
//Opens an existing PowerPoint Presentation file.
using IPresentation presentation = Syncfusion.Presentation.Presentation.Open(fileStream);
using MemoryStream ms = new();
if (rdEncrypt.IsChecked == true)
{
//Encrypts the PowerPoint Presentation file.
presentation.Encrypt("syncfusion");
fileName = "Encrypt.pptx";
}
else
{
//Decrypts the PowerPoint Presentation file.
presentation.RemoveEncryption();
fileName = "Decrypt.pptx";
}
//Saves the presentation to the memory stream.
presentation.Save(ms);
ms.Position = 0;
//Saves the memory stream as file.
SaveAndLaunch.Save(fileName, ms);
}
/// <summary>
/// Create a decrypt Presentation document
/// </summary>
/// <returns>Return the created Presentation document as stream</returns>
public MemoryStream CreateDecryptPresentation()
{
FileStream fileStreamInput = new FileStream(ResolveApplicationPath(@"syncfusion-presentation.pptx"), FileMode.Open, FileAccess.Read);
IPresentation presentation = Syncfusion.Presentation.Presentation.Open(fileStreamInput);
presentation.RemoveEncryption();
//Save the document as a stream and retrun the stream
using (MemoryStream stream = new MemoryStream())
{
//Save the created PowerPoint document to MemoryStream
presentation.Save(stream);
return(stream);
}
}
/// <summary>
/// Decrypt the word document
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void decrpt_Click(object sender, RoutedEventArgs e)
{
try
{
if (textBox2.Tag == null)
{
MessageBox.Show("Please browse the Presentation to decrypt", "Input Missing", MessageBoxButton.OK);
}
else if (string.IsNullOrEmpty(passwordBox2.Password))
{
MessageBox.Show("Please enter password to decrypt", "Password Missing", MessageBoxButton.OK);
}
else
{
//creates instance for the presentation
IPresentation presentation = Presentation.Open(textBox2.Tag.ToString(), passwordBox2.Password);
//Decrypts the presentation
presentation.RemoveEncryption();
//Saving the presentation
presentation.Save("Decryption.pptx");
//Closing the document
presentation.Close();
if (MessageBox.Show("Do you want to view the decrypted Presentation?", "Decrypted Presentation",
MessageBoxButton.YesNo, MessageBoxImage.Information) == MessageBoxResult.Yes)
{
#if !NETCore
System.Diagnostics.Process.Start("Decryption.pptx");
#else
System.Diagnostics.Process process = new System.Diagnostics.Process();
process.StartInfo = new System.Diagnostics.ProcessStartInfo("Decryption.pptx")
{
UseShellExecute = true
};
process.Start();
#endif
}
}
}
catch (Exception exp)
{
MessageBox.Show("Please enter correct password", "Incorrect password",
MessageBoxButton.OK);
}
}