Compress CGM format using C#

CGM Compression Overview

Aspose.ZIP for .NET offers a high-performance C# API for compressing CGM files in .NET projects. The API handles single items or directories, supports stream-based input, and gives control over compression settings and output structure. This is handy when bundling assets for delivery. Create ZIP, 7Zip, TAR, GZIP, and other archives without external utilities, and use encryption options when you need to protect CGM data. This provides a practical way to automate packaging and reduce storage footprints in .NET solutions.

  PM> Install-Package Aspose.ZIP

C# Example: Compress CGM Files Programmatically

The snippet below illustrates the basic API workflow for compressing a CGM file, including archive creation, entry addition, and saving the final ZIP output.

Compress CGM file via .NET:

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

FAQ

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

1. Yes. Aspose.ZIP for .NET allows you to load and compress multiple CGM 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 CGM files?

2. No. Aspose.ZIP performs lossless compression, meaning that the content and quality of your CGM 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 CGM files?

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