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Online XLSX Document Protection or Set Password via .NET

Develop powerful .NET based XLSX document protection utility application. Code listed for applying password to XLSX spreadsheet through .NET.

XLSX Protect via Java XLSX Protect via C++ XLSX Protect in Android Apps

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Online XLSX Password Protection via App

  1. Import XLSX file to apply password by uploading it.
  2. Do it by clicking inside the drop area via drag and drop of protection app.
  3. Depending on the size of XLSX file and internet speed wait for few seconds.
  4. Enter the password to set
  5. Click the ‘Protect’ button to protect document.
  6. Download the protected files instantly.

XLSX Password Protection via .NET

  1. Load XLSX file via Workbook class object
  2. Call SetEncryptionOptions with EncryptionType
  3. Assign the password using Settings.Password
  4. Invoke the Save method to save the sheet.
 

.NET Code : XLSX Document Password Protection

 
 

Develop XLSX Password Protection Application via .NET

Need to develop a XLSX password protection app or utility? With Aspose.Cells for .NET a child API of Aspose.Total for .NET , any .NET developer can integrate the above API code within its document protection application. Powerful .NET library allows programming any document password protection solution to secure and lock the files. Moreover it can support many popular formats including XLSX format.

.NET utility to process XLSX file for protection app

There are three alternative options to install “Aspose.Cells for .NET” or “Aspose.Total for .NET” onto your system. Please choose one that resembles your needs and follow the step-by-step instructions:

System Requirements

Our product is fully cross-platform and supports all major .NET implementations following ‘.NET Standard 2.0’ specification:

  • Microsoft .NET Framework, starting from the earliest 2.0 version, and ending with the latest ‘.NET Framework 4.8’
  • .NET Core, starting from the earliest 2.0, and ending with the latest ‘.NET 6’
  • Mono >= 2.6.7

    As .NET code doesn’t rely on the underlying hardware or operating system, but only on a Virtual Machine, so you are free to develop any kind of software for Windows, macOS, Android, iOS and Linux. Just make sure you have installed the corresponding version of .NET Framework, .NET Core, Windows Azure, Mono or Xamarin.

    We recommend using Microsoft Visual Studio, Xamarin, and MonoDevelop IDE to create C#, F#, VB.NET applications.

    For more details please refer to Product Documentation .

FAQs

  • Can I use above .NET code in my application?
    Yes, you are welcome to download this code and utilize it for the purpose of developing .NET-based document password protection application. This code can serve as a valuable resource to enhance the functionality and capabilities of your projects in the domain of backend document processing, manipulation and protection.
  • Is this online document protection App work only on Windows?
    You have the flexibility to initiate password document protection at any device, irrespective of the operating system it runs on, whether it be Windows, Linux, Mac OS, or Android. All that's required is a contemporary web browser and an active internet connection.
  • Is it safe to use the online app for securing XLSX document?
    Of course! The output files generated through our service will be securely and automatically removed from our servers within a 24-hour timeframe. As a result, the display links associated with these files will cease to be functional after this period.
  • What browser should to use App?
    You can use any modern web browser like Google Chrome, Firefox, Opera, or Safari for online XLSX document protector. However, if you're developing a desktop application, we recommend using the Aspose.Total document processing API for efficient management.

Explore Protect File Options with .NET

Protect DOC Files (Microsoft Word Binary Format)
Protect DOCX Files (Office 2007+ Word Document)
Protect Excel Files
Protect ODP Files (OpenDocument Presentation Format)
Protect ODS Files (OpenDocument Spreadsheet)
Protect ODT Files (OpenDocument Text File Format)
Protect PDF Files (Portable Document Format)
Protect Powerpoint Files
Protect PPT Files (PowerPoint Presentation)
Protect PPTX Files (Open XML presentation Format)
Protect Word Files
Protect XLS Files (Microsoft Excel Binary Format)
Protect XLSX Files (Open XML Workbook)