Compress VSTM format using C#

VSTM Compression Overview

With Aspose.ZIP for .NET, you can compress VSTM files using a clean, fully managed C# API for server and desktop workflows. It supports single files and large batches, works with file paths or streams, and lets you control compression level and archive format. This is useful for packaging files for transfer or backup. Archive VSTM data into ZIP, 7Zip, TAR, GZIP, and more with no third-party tools; encryption and password protection are available for sensitive content. This makes automation straightforward for build pipelines, backups, or content distribution workflows.

  PM> Install-Package Aspose.ZIP

C# Example: Create a ZIP Archive from VSTM Files

The snippet below shows the core API steps to compress a VSTM file: create an Archive object, add the entry, and save the resulting ZIP.

Compress VSTM file via .NET:

    var dir = "full directory path";
    using (var arch = new Archive())
    {
    arch.CreateEntry("filename.vstm", dir+"file.vstm");
    arch.Save(dir+"archived_result.zip");
    }

FAQ

Can I compress multiple VSTM files into a single ZIP archive using C#

1. Yes. Aspose.ZIP for .NET allows you to load and compress multiple VSTM files by adding each file as an entry to the Archive object. You can combine individual files, folders, or streams into a single ZIP archive through a straightforward C# workflow.

Does Aspose.ZIP for .NET reduce the original quality of VSTM files?

2. No. Aspose.ZIP performs lossless compression, meaning that the content and quality of your VSTM files remain unchanged. The library only reduces file size by applying efficient archive compression algorithms without altering the actual data inside the file.

Can I password-protect ZIP archives that contain VSTM files?

3. Yes. The library supports password protection and AES encryption, allowing you to securely package sensitive VSTM files. You can specify encryption settings when creating entries or during the archive-generation process.